Adding upstream version 20210726.upstream/20210726

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 3149 insertions, 0 deletions

diff --git a/share/build-scripts/debconf b/share/build-scripts/debconf
new file mode 100755
index 0000000..39856ae
--- /dev/null
+++ b/share/build-scripts/debconf
@@ -0,0 +1,1159 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set -e
+
+PROJECT="open-infrastructure"
+SOFTWARE="compute-tools"
+PROGRAM="container"
+
+SCRIPT="${0}"
+export SCRIPT
+
+CACHE="/var/cache/${PROGRAM}/build-$(basename ${SCRIPT})"
+CONFIG="/etc/${SOFTWARE}/config"
+HOOKS="/etc/${SOFTWARE}/hooks"
+MACHINES="/var/lib/machines"
+
+Parameters ()
+{
+	GETOPT_LONGOPTIONS="bind:,bind-ro:,script:,name:,preseed-file:"
+	GETOPT_OPTIONS="b:,s:,n:,p:"
+
+	PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${SCRIPT} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"
+
+	if [ "${?}" != "0" ]
+	then
+		echo "'${SCRIPT}': getopt exit" >&2
+		exit 1
+	fi
+
+	eval set -- "${PARAMETERS}"
+
+	while true
+	do
+		case "${1}" in
+			-b|--bind)
+				# ignore
+				shift 2
+				;;
+
+			--bind-ro)
+				# ignore
+				shift 2
+				;;
+
+			--cnt.auto)
+				# ignore
+				shift 2
+				;;
+
+			--cnt.container-server)
+				# ignore
+				shift 2
+				;;
+
+			-s|--script)
+				# ignore
+				shift 2
+				;;
+
+			-n|--name)
+				NAME="${2}"
+				shift 2
+				;;
+
+			--preseed-file)
+				PRESEED_FILE="${2}"
+				shift 2
+				;;
+
+			--)
+				shift 1
+				break
+				;;
+
+			*)
+				echo "'${SCRIPT}': getopt error" >&2
+				exit 1
+				;;
+		esac
+	done
+}
+
+Usage ()
+{
+	echo "Usage: container build -n|--name NAME -s|--script ${SCRIPT} -- [-p|--preseed-file FILE]" >&2
+	exit 1
+}
+
+Parameters "${@}"
+
+if [ -z "${NAME}" ]
+then
+	Usage
+fi
+
+if [ -e "${MACHINES}/${NAME}" ]
+then
+	echo "'${NAME}': container already exists" >&2
+	exit 1
+fi
+
+if [ -x /usr/bin/mmdebstrap ]
+then
+	BOOTSTRAP="mmdebstrap"
+elif [ -x /usr/sbin/debootstrap ]
+then
+	BOOTSTRAP="debootstrap"
+else
+	echo "'${NAME}': /usr/bin/mmdebstrap or /usr/sbin/debootstrap - no such file." >&2
+	exit 1
+fi
+
+if [ "$(id -u)" -ne 0 ]
+then
+	echo "'${NAME}': need root privileges" >&2
+	exit 1
+fi
+
+Mount ()
+{
+	# Mounting rw bind mounts
+	if [ -n "${BIND}" ]
+	then
+		BINDS="$(echo ${BIND} | sed -e 's|;| |g')"
+
+		for ENTRY in ${BINDS}
+		do
+			SOURCE="$(echo ${ENTRY} | awk -F: '{ print $1 }')"
+			TARGET="$(echo ${ENTRY} | awk -F: '{ print $2 }')"
+
+			mkdir -p "${SOURCE}"
+			mkdir -p "${MACHINES}/${NAME}/${TARGET}"
+
+			mount -o bind "${SOURCE}" "${MACHINES}/${NAME}/${TARGET}"
+		done
+	fi
+
+	# Mounting ro bind mounts
+	if [ -n "${BIND_RO}" ]
+	then
+		BINDS_RO="$(echo ${BIND_RO} | sed -e 's|;| |g')"
+
+		for ENTRY in ${BINDS_RO}
+		do
+			SOURCE="$(echo ${ENTRY} | awk -F: '{ print $1 }')"
+			TARGET="$(echo ${ENTRY} | awk -F: '{ print $2 }')"
+
+			mkdir -p "${SOURCE}"
+			mkdir -p "${MACHINES}/${NAME}/${TARGET}"
+
+			mount -o rbind "${SOURCE}" "${MACHINES}/${NAME}/${TARGET}"
+		done
+	fi
+
+	# Mounting overlay mounts
+	if [ -n "${CNT_OVERLAY}" ]
+	then
+		CNT_OVERLAYS="$(echo ${CNT_OVERLAY} | sed -e 's|;| |g')"
+
+		COUNT="0"
+		for CNT_OVERLAY in ${CNT_OVERLAYS}
+		do
+			DIRECTORY_LOWER="$(echo ${CNT_OVERLAY} | awk -F: '{ print $1 }')"
+			DIRECTORY_UPPER="$(echo ${CNT_OVERLAY} | awk -F: '{ print $2 }')"
+			DIRECTORY_WORK="$(echo ${CNT_OVERLAY} | awk -F: '{ print $3 }')"
+			DIRECTORY_MERGED="$(echo ${CNT_OVERLAY} | awk -F: '{ print $4 }')"
+
+			COUNT="$((${COUNT} + 1))"
+			CNT_OVERLAY_OPTION="$(echo ${CNT_OVERLAY_OPTIONS} | awk -F ';' "{ print \$${COUNT} }")"
+
+			for DIRECTORY in "${DIRECTORY_LOWER}" "${DIRECTORY_UPPER}" "${DIRECTORY_WORK}" "${DIRECTORY_MERGED}"
+			do
+				mkdir -p "${DIRECTORY}"
+			done
+
+			if ! findmnt -n -o SOURCE "${DIRECTORY_MERGED}" | grep -qs '^overlay-'
+			then
+				if [ -n "${CNT_OVERLAY_OPTION}" ]
+				then
+					CNT_OVERLAY_OPTION="-o ${CNT_OVERLAY_OPTION}"
+				fi
+
+				mount -t overlay overlay-${NAME} ${CNT_OVERLAY_OPTION} -olowerdir="${DIRECTORY_LOWER}",upperdir="${DIRECTORY_UPPER}",workdir="${DIRECTORY_WORK}" "${DIRECTORY_MERGED}"
+			fi
+		done
+	fi
+}
+
+Umount ()
+{
+	# Unmounting overlay mounts
+	if [ -n "${CNT_OVERLAY}" ]
+	then
+		CNT_OVERLAYS="$(echo ${CNT_OVERLAY} | sed -e 's|;| |g')"
+
+		for CNT_OVERLAY in ${CNT_OVERLAYS}
+		do
+			DIRECTORY_LOWER="$(echo ${CNT_OVERLAY} | awk -F: '{ print $1 }')"
+			DIRECTORY_UPPER="$(echo ${CNT_OVERLAY} | awk -F: '{ print $2 }')"
+			DIRECTORY_WORK="$(echo ${CNT_OVERLAY} | awk -F: '{ print $3 }')"
+			DIRECTORY_MERGED="$(echo ${CNT_OVERLAY} | awk -F: '{ print $4 }')"
+
+			umount -f "${DIRECTORY_MERGED}" > /dev/null 2>&1 || true
+
+			for DIRECTORY in "${DIRECTORY_LOWER}" "${DIRECTORY_UPPER}" "${DIRECTORY_WORK}" "${DIRECTORY_MERGED}"
+			do
+				rmdir --ignore-fail-on-non-empty --parents ${DIRECTORY} > /dev/null 2>&1 || true
+			done
+		done
+
+		# empty workdir otherwise there might happen stale file handles
+		if [ -d "${DIRECTORY_WORK}" ]
+		then
+			rm --preserve-root --one-file-system -rf "${DIRECTORY_WORK}"/*
+		fi
+	fi
+
+	# Unmounting ro bind mounts
+	if [ -n "${BIND_RO}" ]
+	then
+		# unmount in reverse order to allow nested bind mounts
+		BINDS_RO="$(echo ${BIND_RO} | sed -e 's|;| |g' | awk '{ for (i=NF; i>=1; i--) printf "%s ", $i; print ""}')"
+
+		for ENTRY in ${BINDS_RO}
+		do
+			TARGET="$(echo ${ENTRY} | awk -F: '{ print $2 }')"
+
+			umount -f "${MACHINES}/${NAME}/${TARGET}" > /dev/null 2>&1 || true
+		done
+	fi
+
+	# Unmounting rw bind mounts
+	if [ -n "${BIND}" ]
+	then
+		# unmount in reverse order to allow nested bind mounts
+		BINDS="$(echo ${BIND} | sed -e 's|;| |g' | awk '{ for (i=NF; i>=1; i--) printf "%s ", $i; print ""}')"
+
+		for ENTRY in ${BINDS}
+		do
+			TARGET="$(echo ${ENTRY} | awk -F: '{ print $2 }')"
+
+			umount -f "${MACHINES}/${NAME}/${TARGET}" > /dev/null 2>&1 || true
+		done
+	fi
+
+	# Unmounting pseudo-filesystems
+	umount -f "${DIRECTORY}/dev/pts" > /dev/null 2>&1 || true
+	umount -f "${DIRECTORY}/proc" > /dev/null 2>&1 || true
+	umount -f "${DIRECTORY}/sys" > /dev/null 2>&1 || true
+}
+
+Chroot ()
+{
+	CHROOT="${1}"
+	shift
+
+	chroot "${CHROOT}" /usr/bin/env -i \
+		LC_ALL="C" PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games" TERM="${TERM}" \
+		DEBIAN_FRONTEND="${DEBCONF_FRONTEND}" DEBIAN_PRIORITY="${DEBCONF_PRIORITY}" \
+		DEBCONF_NONINTERACTIVE_SEEN="true" DEBCONF_NOWARNINGS="true" \
+		ftp_proxy="${ftp_proxy}" http_proxy="${http_proxy}" \
+		${@}
+}
+
+Upgrade_system ()
+{
+	DIRECTORY="${1}"
+
+	# Mount pseudo-filesystems
+	mount -o bind /dev/pts "${DIRECTORY}/dev/pts"
+	mount -o bind /proc "${DIRECTORY}/proc"
+	mount -o bind /sys "${DIRECTORY}/sys"
+
+	# Disable dpkg syncing
+
+cat > "${DIRECTORY}/etc/dpkg/dpkg.cfg.d/${SOFTWARE}" << EOF
+force-unsafe-io
+EOF
+
+	# Create policy-rc.d file
+
+cat > "${DIRECTORY}/usr/sbin/policy-rc.d" << EOF
+#!/bin/sh
+echo "All runlevel operations denied by policy" >&2
+exit 101
+EOF
+
+	chmod 0755 "${DIRECTORY}/usr/sbin/policy-rc.d"
+
+	# Upgrade system
+	Chroot "${DIRECTORY}" "apt update"
+	Chroot "${DIRECTORY}" "apt --yes --option Dpkg::Options::=--force-confnew upgrade"
+	Chroot "${DIRECTORY}" "apt --yes --option Dpkg::Options::=--force-confnew dist-upgrade"
+
+	# Install systemd support packages
+	Chroot "${DIRECTORY}" "apt --yes install dbus libpam-systemd systemd-sysv"
+
+	Chroot "${DIRECTORY}" "apt clean"
+}
+
+Cleanup_system ()
+{
+	DIRECTORY="${1}"
+
+	Chroot "${DIRECTORY}" "apt --yes --purge autoremove"
+	Chroot "${DIRECTORY}" "apt clean"
+
+	# Cleanup
+	rm -f "${DIRECTORY}/etc/dpkg/dpkg.cfg.d/${SOFTWARE}"
+	rm -f "${DIRECTORY}/usr/sbin/policy-rc.d"
+
+	# Unmount pseudo-filesystems
+	umount -f "${DIRECTORY}/dev/pts" > /dev/null 2>&1 || true
+	umount -f "${DIRECTORY}/proc" > /dev/null 2>&1 || true
+	umount -f "${DIRECTORY}/sys" > /dev/null 2>&1 || true
+}
+
+Debconf ()
+{
+	# Configure local debconf
+	mkdir -p "/tmp/${SOFTWARE}"
+	DEBCONF_TMPDIR="$(mktemp -d -p "/tmp/${SOFTWARE}" -t $(basename ${0}).XXXX)"
+	export DEBCONF_TMPDIR
+
+	mkdir -p "${DEBCONF_TMPDIR}/debconf"
+
+cat > "${DEBCONF_TMPDIR}/debconf.systemrc" << EOF
+Config: configdb
+Templates: templatedb
+
+Name: config
+Driver: File
+Mode: 644
+Reject-Type: password
+Filename: ${DEBCONF_TMPDIR}/debconf/config.dat
+
+Name: passwords
+Driver: File
+Mode: 600
+Backup: false
+Required: false
+Accept-Type: password
+Filename: ${DEBCONF_TMPDIR}/debconf/passwords.dat
+
+Name: configdb
+Driver: Stack
+Stack: config, passwords
+
+Name: templatedb
+Driver: File
+Mode: 644
+Filename: ${DEBCONF_TMPDIR}/debconf/templates.dat
+EOF
+
+	DEBCONF_SYSTEMRC="${DEBCONF_TMPDIR}/debconf.systemrc"
+	export DEBCONF_SYSTEMRC
+}
+
+Debootstrap ()
+{
+	DIRECTORY="${1}"
+
+	EXCLUDE="ifupdown"
+	INCLUDE="dbus"
+
+	# apt repositories
+	INCLUDE="${INCLUDE},gnupg"
+
+	if ( echo "${MIRROR}" | grep -qs '^https' ) || \
+	   ( echo "${PARENT_MIRROR}" | grep -qs '^https' )
+	then
+		INCLUDE="${INCLUDE},apt-transport-https,ca-certificates"
+	fi
+
+	case "${MODE}" in
+		progress-linux)
+			INCLUDE="${INCLUDE},progress-linux,gnupg"
+			;;
+	esac
+
+	mkdir -p "$(dirname ${DIRECTORY})"
+
+	case "${BOOTSTRAP}" in
+		debootstrap)
+			debootstrap --verbose --arch=${ARCHITECTURE} --components=${PARENT_ARCHIVE_AREAS} \
+				--exclude=${EXCLUDE} --include=${INCLUDE} ${PARENT_DISTRIBUTION} "${DIRECTORY}" ${PARENT_MIRROR}
+			;;
+
+		mmdebstrap)
+			mmdebstrap --arch=${ARCHITECTURE} --components=${PARENT_ARCHIVE_AREAS} \
+				 --mode=root --include=${INCLUDE} ${PARENT_DISTRIBUTION} "${DIRECTORY}" ${PARENT_MIRROR}
+			;;
+
+		*)
+			echo "'${NAME}': ${BOOTSTRAP} - not supported" >&2
+			exit 1
+			;;
+	esac
+}
+
+Configure_apt ()
+{
+	DIRECTORY="${1}"
+
+	# Configure apt
+	rm -f "${DIRECTORY}/etc/apt/sources.list"
+
+	PARENT_AREA="$(echo ${PARENT_ARCHIVE_AREAS} | sed -e 's|,| |g')"
+	PARENT_DIST="$(echo ${PARENT_DISTRIBUTION} | sed -e 's|-backports||')"
+
+cat > "${DIRECTORY}/etc/apt/sources.list.d/debian.list" << EOF
+# /etc/apt/sources.list.d/debian.list
+
+deb ${PARENT_MIRROR} ${PARENT_DIST} ${PARENT_AREA}
+EOF
+
+	case "${MODE}" in
+		progress-linux)
+
+cat > "${DIRECTORY}/progress-linux.cfg" << EOF
+progress-linux progress-linux/archives multiselect $(echo ${ARCHIVES} | sed -e 's| |, |g')
+progress-linux progress-linux/archive-areas multiselect $(echo ${ARCHIVE_AREAS} | sed -e 's|,| |g')
+EOF
+
+			Chroot "${DIRECTORY}" "debconf-set-selections progress-linux.cfg"
+			Chroot "${DIRECTORY}" "DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=criticial dpkg-reconfigure progress-linux"
+
+			rm -f "${DIRECTORY}/progress-linux.cfg"
+
+			Chroot "${DIRECTORY}" "apt update"
+			;;
+	esac
+}
+
+Deconfigure_system ()
+{
+	DIRECTORY="${1}"
+
+	# Configure fstab
+
+cat > "${DIRECTORY}/etc/fstab" << EOF
+# /etc/fstab: static file system information.
+#
+# Use 'blkid' to print the universally unique identifier for a
+# device; this may be used with UUID= as a more robust way to name devices
+# that works even if disks are added and removed. See fstab(5).
+#
+# <file system> <mount point>   <type>  <options>       <dump>  <pass>
+
+EOF
+
+	# Fix /etc/mtab
+	rm -f "${DIRECTORY}/etc/mtab"
+	ln -s /proc/self/mounts "${DIRECTORY}/etc/mtab"
+
+	# Removing resolv.conf
+	rm -f "${DIRECTORY}/etc/resolv.conf"
+	cp /etc/resolv.conf "${DIRECTORY}/etc"
+
+	# Removing hosts/hostname
+	rm -f "${DIRECTORY}"/etc/hosts
+	rm -f "${DIRECTORY}"/etc/hostname
+
+	# Removing openssh-server host keys
+	rm -f "${DIRECTORY}"/etc/ssh/ssh_host_*_key
+	rm -f "${DIRECTORY}"/etc/ssh/ssh_host_*_key.pub
+}
+
+Configure_system ()
+{
+	DIRECTORY="${1}"
+
+	# Overwrite resolv.conf from cache with hosts resolv.conf
+	rm -f "${DIRECTORY}/etc/resolv.conf"
+	cp /etc/resolv.conf "${DIRECTORY}/etc"
+
+	echo "${NAME}" > "${DIRECTORY}/etc/hostname"
+
+	# Configure apt
+	rm -f "${DIRECTORY}/etc/apt/sources.list"
+
+	PARENT_AREA="$(echo ${PARENT_ARCHIVE_AREAS} | sed -e 's|,| |g')"
+	PARENT_DIST="$(echo ${PARENT_DISTRIBUTION} | sed -e 's|-backports||')"
+
+cat > "${DIRECTORY}/etc/apt/sources.list.d/debian.list" << EOF
+# /etc/apt/sources.list.d/debian.list
+
+deb ${PARENT_MIRROR} ${PARENT_DIST} ${PARENT_AREA}
+EOF
+
+	for PARENT_REPO in ${PARENT_ARCHIVES}
+	do
+		case "${PARENT_REPO}" in
+			buster-security)
+				echo "deb ${PARENT_MIRROR_SECURITY} ${PARENT_DIST}/updates ${PARENT_AREA}" >> "${DIRECTORY}/etc/apt/sources.list.d/debian.list"
+				;;
+
+			${PARENT_DIST}-security)
+				echo "deb ${PARENT_MIRROR_SECURITY} ${PARENT_DIST}-security ${PARENT_AREA}" >> "${DIRECTORY}/etc/apt/sources.list.d/debian.list"
+				;;
+
+			${PARENT_DIST}-updates)
+				echo "deb ${PARENT_MIRROR} ${PARENT_DIST}-updates ${PARENT_AREA}" >> "${DIRECTORY}/etc/apt/sources.list.d/debian.list"
+				;;
+
+			${PARENT_DIST}-backports)
+				echo "deb ${PARENT_MIRROR} ${PARENT_DIST}-backports ${PARENT_AREA}" >> "${DIRECTORY}/etc/apt/sources.list.d/debian.list"
+				;;
+
+			${PARENT_DIST}-proposed-updates)
+				echo "deb ${PARENT_MIRROR} ${PARENT_DIST}-proposed-updates ${PARENT_AREA}" >> "${DIRECTORY}/etc/apt/sources.list.d/debian.list"
+				;;
+
+			experimental)
+				echo "deb ${PARENT_MIRROR} experimental ${PARENT_AREA}" >> "${DIRECTORY}/etc/apt/sources.list.d/debian.list"
+				;;
+		esac
+	done
+
+	case "${MODE}" in
+		progress-linux)
+
+cat > "${DIRECTORY}/progress-linux.cfg" << EOF
+progress-linux progress-linux/archives multiselect $(echo ${ARCHIVES} | sed -e 's| |, |g')
+progress-linux progress-linux/archive-areas multiselect $(echo ${ARCHIVE_AREAS} | sed -e 's|,| |g')
+EOF
+
+			Chroot "${DIRECTORY}" "debconf-set-selections progress-linux.cfg"
+			Chroot "${DIRECTORY}" "DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=criticial dpkg-reconfigure progress-linux"
+
+			rm -f "${DIRECTORY}/progress-linux.cfg"
+			;;
+	esac
+
+	if [ "${APT_RECOMMENDS}" = "false" ]
+	then
+
+cat > "${DIRECTORY}/etc/apt/apt.conf.d/recommends.conf" << EOF
+APT::Install-Recommends "false";
+EOF
+
+	fi
+
+	# Add local archives configured from preseed file
+	if ls "${DEBCONF_TMPDIR}/apt"/*.list > /dev/null 2>&1
+	then
+		cp "${DEBCONF_TMPDIR}/apt"/*.list "${DIRECTORY}/etc/apt/sources.list.d"
+
+		if ls "${DEBCONF_TMPDIR}/apt"/*.key > /dev/null 2>&1
+		then
+			for KEY in "${DEBCONF_TMPDIR}/apt"/*.key
+			do
+				cp "${KEY}" "${DIRECTORY}"
+				Chroot "${DIRECTORY}" "apt-key add $(basename ${KEY})"
+				rm -f "${DIRECTORY}/$(basename ${KEY})"
+			done
+		fi
+
+		if ls "${DEBCONF_TMPDIR}/apt"/*.pref > /dev/null 2>&1
+		then
+			cp "${DEBCONF_TMPDIR}/apt"/*.pref "${DIRECTORY}/etc/apt/preferences.d"
+		fi
+	fi
+
+	Upgrade_system "${DIRECTORY}"
+
+	# Preseed system
+	if [ -n "${PRESEED_FILE}" ]
+	then
+		for FILE in ${PRESEED_FILE}
+		do
+			if [ -e /usr/bin/kdig ]
+			then
+				DIG="/usr/bin/kdig"
+			elif [ -e /usr/bin/dig ]
+			then
+				DIG="/usr/bin/dig"
+			fi
+
+			if [ -n "${DIG}" ]
+			then
+				IPV4_ADDRESS1="$(${DIG} A +short ${NAME} | tail -n1)"
+				IPV4_ADDRESS1_PART1="$(echo ${IPV4_ADDRESS1} | cut -d. -f1)"
+				IPV4_ADDRESS1_PART2="$(echo ${IPV4_ADDRESS1} | cut -d. -f2)"
+				IPV4_ADDRESS1_PART3="$(echo ${IPV4_ADDRESS1} | cut -d. -f3)"
+				IPV4_ADDRESS1_PART4="$(echo ${IPV4_ADDRESS1} | cut -d. -f4)"
+
+				IPV6_ADDRESS1="$(${DIG} AAAA +short ${NAME} | tail -n1)"
+				# FIXME: address parts
+
+				export IPV4_ADDRESS1 IPV4_ADDRESS1_PART1 IPV4_ADDRESS1_PART2 IPV4_ADDRESS1_PART3 IPV4_ADDRESS1_PART4
+				export IPV6_ADDRESS1
+			fi
+
+			sed -e "s|@FILE@|${FILE}|g" \
+			    -e "s|@NAME@|${NAME}|g" \
+			    -e "s|@IPV4_ADDRESS1@|${IPV4_ADDRESS1}|g" \
+			    -e "s|@IPV4_ADDRESS1_PART1@|${IPV4_ADDRESS1_PART1}|g" \
+			    -e "s|@IPV4_ADDRESS1_PART2@|${IPV4_ADDRESS1_PART2}|g" \
+			    -e "s|@IPV4_ADDRESS1_PART3@|${IPV4_ADDRESS1_PART3}|g" \
+			    -e "s|@IPV4_ADDRESS1_PART4@|${IPV4_ADDRESS1_PART4}|g" \
+			    -e "s|@IPV6_ADDRESS1@|${IPV6_ADDRESS1}|g" \
+			"${FILE}" >> "${DIRECTORY}/preseed.cfg"
+		done
+
+		Chroot "${DIRECTORY}" "debconf-set-selections preseed.cfg"
+
+		rm -f "${DIRECTORY}/preseed.cfg"
+	fi
+
+	# Manual hack to workaround broken preseeding in locales package
+	if [ -n "${PRESEED_FILE}" ]
+	then
+		for FILE in ${PRESEED_FILE}
+		do
+			if grep -qs locales "${FILE}"
+			then
+				if Chroot "${DIRECTORY}" dpkg --get-selections | awk '{ print $1 }' | grep -qs '^locales$'
+				then
+					rm -f "${DIRECTORY}/etc/default/locale" "${DIRECTORY}/etc/locale.gen"
+					Chroot "${DIRECTORY}" "DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=criticial dpkg-reconfigure locales"
+
+					break
+				fi
+			fi
+		done
+	fi
+
+	# Manual hack to create conffiles when using locales-all instead of locales
+	if [ ! -e "${DIRECTORY}/etc/environment" ]
+	then
+		echo "LANG=C.UTF-8" >> "${DIRECTORY}/etc/environment"
+	fi
+
+	if [ ! -e "${DIRECTORY}/etc/default/locale" ]
+	then
+		echo "LANG=C.UTF-8" >> "${DIRECTORY}/etc/default/locale"
+	fi
+
+	# Manual hack to workaround broken preseeding in tzdata package
+	if [ -n "${PRESEED_FILE}" ]
+	then
+		for FILE in ${PRESEED_FILE}
+		do
+			if grep -qs tzdata "${FILE}"
+			then
+				rm -f "${DIRECTORY}/etc/localtime" "${DIRECTORY}/etc/timezone"
+				Chroot "${DIRECTORY}" "DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=criticial dpkg-reconfigure tzdata"
+
+				break
+			fi
+		done
+	fi
+
+	if [ -n "${PACKAGES}" ]
+	then
+		Chroot "${DIRECTORY}" "apt --option Dpkg::Options::=--force-confnew --yes install ${PACKAGES}"
+	fi
+
+	# Manual hack to regenerate ssh keys
+	if Chroot "${DIRECTORY}" dpkg --get-selections | awk '{ print $1 }' | grep -qs '^openssh-server$' && \
+	   ! ls "${DIRECTORY}"/etc/ssh/ssh_host_*_key > /dev/null 2>&1
+	then
+		Chroot "${DIRECTORY}" "DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=criticial dpkg-reconfigure openssh-server"
+	fi
+
+	# container command
+	if [ -n "${CONTAINER_COMMAND}" ]
+	then
+		echo "${CONTAINER_COMMAND}" > "${DIRECTORY}/.container-command"
+
+		chmod 0755 "${DIRECTORY}/.container-command"
+		Chroot "${DIRECTORY}" "sh /.container-command"
+
+		rm -f "${DIRECTORY}/.container-command"
+	fi
+
+	for NUMBER in $(seq 1 ${CONTAINER_COMMAND_NUMBER})
+	do
+		eval COMMAND="$`echo CONTAINER_COMMAND${NUMBER}`"
+
+		echo "${COMMAND}" > "${DIRECTORY}/.container-command"
+
+		chmod 0755 "${DIRECTORY}/.container-command"
+		Chroot "${DIRECTORY}" "sh /.container-command"
+
+		rm -f "${DIRECTORY}/.container-command"
+	done
+}
+
+Configure_network ()
+{
+	DIRECTORY="${1}"
+
+	# Create /etc/resolv.conf
+	rm -f "${DIRECTORY}/etc/resolv.conf.tmp"
+
+	if [ -n "${NAMESERVER_DOMAIN}" ]
+	then
+		echo "domain ${NAMESERVER_DOMAIN}" >> "${DIRECTORY}/etc/resolv.conf.tmp"
+	fi
+
+	if [ -n "${NAMESERVER_SEARCH}" ]
+	then
+		echo "search ${NAMESERVER_SEARCH}" >> "${DIRECTORY}/etc/resolv.conf.tmp"
+	fi
+
+	if [ -n "${NAMESERVER_SERVER}" ]
+	then
+		if [ -e "${DIRECTORY}/etc/resolv.conf.tmp" ]
+		then
+			echo "" >> "${DIRECTORY}/etc/resolv.conf.tmp"
+		fi
+
+		for NAMESERVER in $(echo ${NAMESERVER_SERVER} | sed -e 's|,| |g')
+		do
+			echo "nameserver ${NAMESERVER}" >> "${DIRECTORY}/etc/resolv.conf.tmp"
+		done
+	fi
+
+	if [ -n "${NAMESERVER_OPTIONS}" ]
+	then
+		if [ -e "${DIRECTORY}/etc/resolv.conf.tmp" ]
+		then
+			echo "" >> "${DIRECTORY}/etc/resolv.conf.tmp"
+		fi
+
+		echo "options ${NAMESERVER_OPTIONS}" >> "${DIRECTORY}/etc/resolv.conf.tmp"
+	fi
+
+	if [ -e "${DIRECTORY}/etc/resolv.conf.tmp" ]
+	then
+		mv "${DIRECTORY}/etc/resolv.conf.tmp" "${DIRECTORY}/etc/resolv.conf"
+	fi
+
+	# Create /etc/hosts
+	rm -f "${DIRECTORY}/etc/hosts.tmp"
+
+	if [ -n "${NETWORK1_IPV4_ADDRESS}" ]
+	then
+
+cat >> "${DIRECTORY}/etc/hosts.tmp" << EOF
+${NETWORK1_IPV4_ADDRESS}	${NAME}
+EOF
+
+	fi
+
+	if [ -n "${NETWORK1_IPV6_ADDRESS}" ]
+	then
+
+cat >> "${DIRECTORY}/etc/hosts.tmp" << EOF
+${NETWORK1_IPV6_ADDRESS}	${NAME}
+EOF
+
+	fi
+
+	if [ -n "${NETWORK1_IPV4_ADDRESS}" ] || [ -n "${NETWORK1_IPV6_ADDRESS}" ]
+	then
+		echo >> "${DIRECTORY}/etc/hosts.tmp"
+	fi
+
+	if [ -z "${NETWORK1_IPV4_ADDRESS}" ] && [ -z "${NETWORK1_IPV6_ADDRESS}" ]
+	then
+		# localhost only
+
+cat > "${DIRECTORY}/etc/hosts.tmp" << EOF
+127.0.0.1	localhost	${NAME}
+::1		localhost	${NAME}
+EOF
+
+	else
+
+cat > "${DIRECTORY}/etc/hosts.tmp" << EOF
+127.0.0.1	localhost
+::1		localhost
+EOF
+
+	fi
+
+cat >> "${DIRECTORY}/etc/hosts.tmp" << EOF
+
+# The following lines are desirable for IPv6 capable hosts
+::1	ip6-localhost ip6-loopback
+fe00::0	ip6-localnet
+ff00::0	ip6-mcastprefix
+ff02::1	ip6-allnodes
+ff02::2	ip6-allrouters
+EOF
+
+	mv "${DIRECTORY}/etc/hosts.tmp" "${DIRECTORY}/etc/hosts"
+}
+
+Configure_systemd_networkd ()
+{
+	DIRECTORY="${1}"
+
+	# Enable systemd-networkd
+	chroot "${DIRECTORY}" systemctl enable systemd-networkd
+
+	for NUMBER in $(seq 1 ${NETWORK_NUMBER})
+	do
+		eval IPV4_COMMENT="$`echo NETWORK${NUMBER}_IPV4_COMMENT`"
+		eval IPV4_METHOD="$`echo NETWORK${NUMBER}_IPV4_METHOD`"
+		eval IPV4_ADDRESS="$`echo NETWORK${NUMBER}_IPV4_ADDRESS`"
+		eval IPV4_GATEWAY="$`echo NETWORK${NUMBER}_IPV4_GATEWAY`"
+		eval IPV4_NETMASK="$`echo NETWORK${NUMBER}_IPV4_NETMASK`"
+		eval IPV4_POST_UP="$`echo NETWORK${NUMBER}_IPV4_POST_UP`"
+		eval IPV4_POST_DOWN="$`echo NETWORK${NUMBER}_IPV4_POST_DOWN`"
+
+		eval IPV6_COMMENT="$`echo NETWORK${NUMBER}_IPV6_COMMENT`"
+		eval IPV6_METHOD="$`echo NETWORK${NUMBER}_IPV6_METHOD`"
+		eval IPV6_ADDRESS="$`echo NETWORK${NUMBER}_IPV6_ADDRESS`"
+		eval IPV6_GATEWAY="$`echo NETWORK${NUMBER}_IPV6_GATEWAY`"
+		eval IPV6_NETMASK="$`echo NETWORK${NUMBER}_IPV6_NETMASK`"
+		eval IPV6_POST_UP="$`echo NETWORK${NUMBER}_IPV6_POST_UP`"
+		eval IPV6_POST_DOWN="$`echo NETWORK${NUMBER}_IPV6_POST_DOWN`"
+
+		if [ "${IPV4_METHOD}" != "none" ] || [ "${IPV6_METHOD}" != "none" ]
+		then
+
+cat > "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+[Match]
+Name=eno${NUMBER}
+EOF
+
+		fi
+
+		if [ -n "${IPV4_METHOD}" ] && [ "${IPV4_METHOD}" != "none" ]
+		then
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+
+[Network]
+EOF
+
+			if [ -n "${IPV4_COMMENT}" ]
+			then
+				echo "Description=${IPV4_COMMENT}" >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network"
+			fi
+
+			case "${IPV4_METHOD}" in
+				dhcp)
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+DHCP=ipv4
+EOF
+
+					;;
+
+				static)
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+DHCP=no
+Address=${IPV4_ADDRESS}/${IPV4_NETMASK}
+EOF
+
+					if [ -n "${IPV4_GATEWAY}" ]
+					then
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+Gateway=${IPV4_GATEWAY}
+EOF
+
+					fi
+					;;
+			esac
+
+			if [ -n "${IPV4_POST_UP}" ]
+			then
+
+cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv4-post-up-eno${NUMBER}.service" << EOF
+[Unit]
+Description=${SOFTWARE} IPV4_POST_UP
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c "${IPV4_POST_UP}"
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv4-post-up-eno${NUMBER}.service
+			fi
+
+			if [ -n "${IPV4_POST_DOWN}" ]
+			then
+
+cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv4-post-down-eno${NUMBER}.service" << EOF
+[Unit]
+Description=${SOFTWARE} IPV4_POST_DOWN
+After=network.target
+Wants=network.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c "${IPV4_POST_DOWN}"
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv4-post-down-eno${NUMBER}.service
+			fi
+		fi
+
+		if [ -n "${IPV6_METHOD}" ] && [ "${IPV6_METHOD}" != "none" ]
+		then
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+
+[Network]
+EOF
+
+			if [ -n "${IPV6_COMMENT}" ]
+			then
+				echo "Description=${IPV6_COMMENT}" >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network"
+			fi
+
+			case "${IPV6_METHOD}" in
+				dhcp)
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+DHCP=ipv6
+EOF
+
+					;;
+
+				static)
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+DHCP=no
+IPv6AcceptRA=no
+Address=${IPV6_ADDRESS}/${IPV6_NETMASK}
+EOF
+
+					if [ -n "${IPV6_GATEWAY}" ]
+					then
+
+cat >> "${DIRECTORY}/etc/systemd/network/eno${NUMBER}.network" << EOF
+Gateway=${IPV6_GATEWAY}
+EOF
+
+					fi
+					;;
+			esac
+
+			if [ -n "${IPV6_POST_UP}" ]
+			then
+
+cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv6-post-up-eno${NUMBER}.service" << EOF
+[Unit]
+Description=${SOFTWARE} IPV6_POST_UP
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c "${IPV6_POST_UP}"
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv6-post-up-eno${NUMBER}.service
+			fi
+
+			if [ -n "${IPV6_POST_DOWN}" ]
+			then
+
+cat > "${DIRECTORY}/etc/systemd/system/cnt-ipv6-post-down-eno${NUMBER}.service" << EOF
+[Unit]
+Description=${SOFTWARE} IPV6_POST_DOWN
+After=network.target
+Wants=network.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c "${IPV6_POST_DOWN}"
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+				chroot "${DIRECTORY}" systemctl enable cnt-ipv6-post-down-eno${NUMBER}.service
+			fi
+		fi
+
+		NUMBER="$((${NUMBER} + 1))"
+	done
+}
+
+Commands ()
+{
+	DIRECTORY="${1}"
+
+	# maximum of 15 characters, prefix is 'veth-'
+	HOSTNAME_SHORT="$(echo ${NAME} | cut -c-8)"
+	HOST_INTERFACE_NAME="$(echo ${NETWORK1_VETH:-veth-${HOSTNAME_SHORT}-0})"
+
+	sed -i	-e "s|^cnt.auto=.*|cnt.auto=${CNT_AUTO}|g" \
+		-e "s|^cnt.container-server=.*|cnt.container-server=${CNT_CONTAINER_SERVER}|g" \
+		-e "s|^cnt.network-bridge=.*|cnt.network-bridge=${HOST_INTERFACE_NAME}:${NETWORK1_BRIDGE:-bridge0}|g" \
+		-e "s|^cnt.overlay=.*|cnt.overlay=${CNT_OVERLAY}|g" \
+		-e "s|^cnt.overlay-options=.*|cnt.overlay-options=${CNT_OVERLAY_OPTIONS}|g" \
+		-e "s|^bind=.*|bind=${BIND}|g" \
+		-e "s|^bind-ro=.*|bind-ro=${BIND_RO}|g" \
+		-e "s|^network-veth-extra=.*|network-veth-extra=${HOST_INTERFACE_NAME}:eno1|g" \
+	"${CONFIG}/${NAME}.conf"
+
+	if [ "${NETWORK_NUMBER}" -ge 2 ]
+	then
+		for NUMBER in $(seq 2 ${NETWORK_NUMBER})
+		do
+			eval IPV4_METHOD="$`echo NETWORK${NUMBER}_IPV4_METHOD`"
+			eval IPV6_METHOD="$`echo NETWORK${NUMBER}_IPV6_METHOD`"
+
+			if [ -z "${IPV4_METHOD}" ] && [ -z "${IPV6_METHOD}" ]
+			then
+				continue
+			fi
+
+			eval HOST_INTERFACE_NAME="$`echo NETWORK${NUMBER}_VETH`"
+
+			HOST_INTERFACE_NAME="$(echo ${HOST_INTERFACE_NAME:-veth-${HOSTNAME_SHORT}-${NUMBER}})"
+			CONTAINER_INTERFACE_NAME="eno${NUMBER}"
+
+			sed -i -e "/^register=.*/ a network-veth-extra=${HOST_INTERFACE_NAME}:${CONTAINER_INTERFACE_NAME}" "${CONFIG}/${NAME}.conf"
+
+			eval BRIDGE="$`echo NETWORK${NUMBER}_BRIDGE`"
+			sed -i -e "/^register=.*/ a cnt.network-bridge=${HOST_INTERFACE_NAME}:${BRIDGE:-bridge${NUMBER}}" "${CONFIG}/${NAME}.conf"
+		done
+	fi
+
+	# Setting root password
+	echo root:${ROOT_PASSWORD} | chroot "${DIRECTORY}" chpasswd
+
+	# Host command
+	if [ -n "${HOST_COMMAND}" ]
+	then
+		echo "${HOST_COMMAND}" > "${DIRECTORY}/.host-command"
+
+		cd "${DIRECTORY}"
+		sh "${DIRECTORY}/.host-command"
+		cd "${OLDPWD}"
+
+		rm -f "${DIRECTORY}/.host-command"
+	fi
+
+	for NUMBER in $(seq 1 ${HOST_COMMAND_NUMBER})
+	do
+		eval COMMAND="$`echo HOST_COMMAND${NUMBER}`"
+
+		echo "${COMMAND}" > "${DIRECTORY}/.host-command"
+
+		cd "${DIRECTORY}"
+		sh "${DIRECTORY}/.host-command"
+		cd "${OLDPWD}"
+
+		rm -f "${DIRECTORY}/.host-command"
+	done
+
+	# Show root password in case its automatically set
+	case "${ROOT_RANDOM_PASSWORD}" in
+		true)
+			echo "${NAME}: root password set to '${ROOT_PASSWORD}'."
+			;;
+	esac
+}
+
+# Trap function
+trap 'Umount' EXIT HUP INT QUIT TERM
+
+umask 0022
+
+export NAME
+
+Debconf
+
+# Pre hooks
+for FILE in "${HOOKS}/pre-${SCRIPT}".* "${HOOKS}/${NAME}.pre-${SCRIPT}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
+
+# Run debconf parts
+for DEBCONF_SCRIPT in "/usr/share/${SOFTWARE}/build-scripts/debconf.d"/*
+do
+	if [ -x "${DEBCONF_SCRIPT}" ]
+	then
+		"${DEBCONF_SCRIPT}"
+	fi
+done
+
+# Read-in configuration from debconf
+. "${DEBCONF_TMPDIR}/debconf.default"
+
+SYSTEM="${MACHINES}/${NAME}"
+
+## Generic parts
+if [ ! -e "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}" ]
+then
+	Debootstrap "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}.tmp"
+	Configure_apt "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}.tmp"
+	Deconfigure_system "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}.tmp"
+
+	mv "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}.tmp" "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}"
+fi
+
+Upgrade_system "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}" || echo "W: If upgrading the system failed, try removing the cache for your distribution in /var/cache/${PROGRAM}"
+Cleanup_system "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}"
+
+## Specific parts
+mkdir -p "${MACHINES}"
+cp -a "${CACHE}/${DISTRIBUTION}_${ARCHITECTURE}" "${MACHINES}/${NAME}"
+
+Mount
+
+Configure_system "${MACHINES}/${NAME}"
+Configure_network "${MACHINES}/${NAME}"
+Configure_systemd_networkd "${MACHINES}/${NAME}"
+Cleanup_system "${MACHINES}/${NAME}"
+
+Commands "${MACHINES}/${NAME}"
+
+# remove debconf temporary files
+rm --preserve-root --one-file-system -rf "${DEBCONF_TMPDIR}"
+rmdir --ignore-fail-on-non-empty "/tmp/${SOFTWARE}" 2>&1 || true
+
+# Post hooks
+for FILE in "${HOOKS}/post-${SCRIPT}".* "${HOOKS}/${NAME}.post-${SCRIPT}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
diff --git a/share/build-scripts/debconf.d/0001-preseed-file b/share/build-scripts/debconf.d/0001-preseed-file
new file mode 100755
index 0000000..d70e4e1
--- /dev/null
+++ b/share/build-scripts/debconf.d/0001-preseed-file
@@ -0,0 +1,108 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set -e
+
+PROJECT="open-infrastructure"
+SOFTWARE="compute-tools"
+PROGRAM="container"
+
+CONFIG="/etc/${SOFTWARE}/debconf"
+
+DEBCONF_NOWARNINGS="true"
+export DEBCONF_NOWARNINGS
+
+. /usr/share/debconf/confmodule
+
+if [ -n "${PRESEED_FILE}" ]
+then
+	# user specified one or more preseed files through commandline option
+	db_set container/preseed-file "${PRESEED_FILE}"
+	db_fset container/preseed-file seen true
+elif [ -e "${CONFIG}/${NAME}.cfg" ]
+then
+	# user did not specify a pressed file, but there is a matching one
+	# available on the system matching the container name
+	db_set container/preseed-file "${CONFIG}/${NAME}.cfg"
+	db_fset container/preseed-file seen true
+elif [ "$(ls ${CONFIG}/*/${NAME}.cfg 2>/dev/null | wc -l)" -eq 1 ]
+then
+	# user did not specify a pressed file, but there is 1 (and only 1)
+	# matching in a sub-directory of /etc/${SOFTWARE}/debconf
+
+	FILE="$(ls ${CONFIG}/*/${NAME}.cfg)"
+
+	db_set container/preseed-file "${FILE}"
+	db_fset container/preseed-file seen true
+elif [ -e "${CONFIG}/default.cfg" ]
+then
+	# user did not specify a pressed file, but there is a default one
+	db_set container/preseed-file "${CONFIG}/default.cfg"
+	db_fset container/preseed-file seen true
+elif ls "${CONFIG}"/*.cfg > /dev/null 2>&1 || ls "${CONFIG}"/*/*.cfg > /dev/null 2>&1
+then
+	# user has not specified preseed files through commandline option,
+	# showing debconf selection dialog for global preseed file.
+
+	FILES="$(cd ${CONFIG} && find . -type f -name '*.cfg' -printf '%P\n' | LC_ALL=C sort)"
+	PRESEED_FILES="$(for FILE in ${FILES}; do echo -n "$(echo ${FILE} | sed -e 's|.cfg$||'), "; done | sed -e 's|, $||')"
+
+	if [ -n "${PRESEED_FILES}" ]
+	then
+		db_subst container/preseed-files CHOICES "none, custom, , ${PRESEED_FILES}"
+
+		db_settitle container/title
+		db_input high container/preseed-files || true
+		db_go
+
+		db_get container/preseed-files
+		PRESEED_FILE="${RET}" # select
+
+		case "${PRESEED_FILE}" in
+			none|custom)
+				;;
+
+			*)
+				# user specified preseed file through debconf select
+				db_set container/preseed-file "${CONFIG}/${PRESEED_FILE}.cfg"
+				db_fset container/preseed-file seen true
+				;;
+		esac
+	fi
+fi
+
+case "${PRESEED_FILE}" in
+	none)
+		;;
+
+	*)
+		# ask user for a preseed file
+		db_settitle container/title
+		db_input high container/preseed-file || true
+		db_go
+
+		db_get container/preseed-file
+		PRESEED_FILE="${RET}" # string (w/ empty)
+
+		echo "PRESEED_FILE=\"${PRESEED_FILE}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+		export PRESEED_FILE
+		;;
+esac
+
+db_stop
diff --git a/share/build-scripts/debconf.d/0001-preseed-file.templates b/share/build-scripts/debconf.d/0001-preseed-file.templates
new file mode 100644
index 0000000..9be825d
--- /dev/null
+++ b/share/build-scripts/debconf.d/0001-preseed-file.templates
@@ -0,0 +1,18 @@
+Template: container/title
+Type: title
+Description: compute-tools
+
+Template: container/preseed-files
+Type: select
+Default: none
+Choices: ${CHOICES}
+Description: Choose a preseed config, enter a custom one, or use no preseed file at all.
+
+Template: container/preseed-file
+Type: string
+Default:
+Description: Enter (optional) preseed file to use:
+ A preseed file can be used to automatically answer questions to this
+ container build script.
+ .
+ If you do not want to use a preseed file, leave this question empty.
diff --git a/share/build-scripts/debconf.d/0002-preseed-debconf b/share/build-scripts/debconf.d/0002-preseed-debconf
new file mode 100755
index 0000000..4bc4da6
--- /dev/null
+++ b/share/build-scripts/debconf.d/0002-preseed-debconf
@@ -0,0 +1,111 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set -e
+
+if [ -e "${DEBCONF_TMPDIR}/debconf.default" ]
+then
+	. "${DEBCONF_TMPDIR}/debconf.default"
+fi
+
+if [ -z "${PRESEED_FILE}" ]
+then
+	# user has not specified or selected any preseed files
+	exit 0
+fi
+
+# user has one or more preseed file specified through commandline option
+# or debconf selection dialog.
+PRESEED_FILES="$(echo ${PRESEED_FILE} | sed -e 's|,| |g')"
+
+DEBCONF_PRESEED_FILES=""
+
+for PRESEED_FILE in ${PRESEED_FILES}
+do
+	if [ ! -e "${PRESEED_FILE}" ]
+	then
+		# preseed file does not exist
+		echo "W: ${PRESEED_FILE}: No such file."
+
+		continue
+	fi
+
+	# add preseed file to debconf
+	DEBCONF_PRESEED_FILES="${DEBCONF_PRESEED_FILES} ${PRESEED_FILE}"
+
+	if ! grep -qs '^ *compute-tools *container/include-preseed-files' "${PRESEED_FILE}"
+	then
+		# preseed file has no includes
+		continue
+	fi
+
+	# preseed file has includes
+	INCLUDE_PRESEED_FILES="$(grep '^ *compute-tools *container/include-preseed-files' ${PRESEED_FILE} | awk '{ $1=$2=$3=""; print $0 }' | sed -e 's|,| |g')"
+
+	# only one include layer is supported, no nested/recursive includes
+	for FILE in ${INCLUDE_PRESEED_FILES}
+	do
+		if [ -e "${FILE}" ]
+		then
+			DEBCONF_PRESEED_FILES="${FILE} ${DEBCONF_PRESEED_FILES}"
+		else
+			# included preseed file does not exist
+			echo "W: ${INCLUDE_PRESEED_FILE}: No such file - included from ${PRESEED_FILE}"
+		fi
+	done
+done
+
+for DEBCONF_PRESEED_FILE in ${DEBCONF_PRESEED_FILES}
+do
+	if [ -e /usr/bin/kdig ]
+	then
+		DIG="/usr/bin/kdig"
+	elif [ -e /usr/bin/dig ]
+	then
+		DIG="/usr/bin/dig"
+	fi
+
+	if [ -n "${DIG}" ]
+	then
+		IPV4_ADDRESS1="$(${DIG} A +short ${NAME} | tail -n1)"
+		IPV4_ADDRESS1_PART1="$(echo ${IPV4_ADDRESS1} | cut -d. -f1)"
+		IPV4_ADDRESS1_PART2="$(echo ${IPV4_ADDRESS1} | cut -d. -f2)"
+		IPV4_ADDRESS1_PART3="$(echo ${IPV4_ADDRESS1} | cut -d. -f3)"
+		IPV4_ADDRESS1_PART4="$(echo ${IPV4_ADDRESS1} | cut -d. -f4)"
+
+		IPV6_ADDRESS1="$(${DIG} AAAA +short ${NAME} | tail -n1)"
+	fi
+
+	sed -e "s|@NAME@|${NAME}|g" \
+	    -e "s|@IPV4_ADDRESS1@|${IPV4_ADDRESS1}|g" \
+	    -e "s|@IPV4_ADDRESS1_PART1@|${IPV4_ADDRESS1_PART1}|g" \
+	    -e "s|@IPV4_ADDRESS1_PART2@|${IPV4_ADDRESS1_PART2}|g" \
+	    -e "s|@IPV4_ADDRESS1_PART3@|${IPV4_ADDRESS1_PART3}|g" \
+	    -e "s|@IPV4_ADDRESS1_PART4@|${IPV4_ADDRESS1_PART4}|g" \
+	    -e "s|@IPV6_ADDRESS1@|${IPV6_ADDRESS1}|g" \
+	"${DEBCONF_PRESEED_FILE}" > "${DIRECTORY}/preseed.cfg"
+
+	# Apply user specified preseed files
+	debconf-set-selections "${DIRECTORY}/preseed.cfg"
+
+	rm -f "${DIRECTORY}/preseed.cfg"
+done
+
+# Write expanded list of debconf preseed files
+echo "PRESEED_FILE=\"${DEBCONF_PRESEED_FILES}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
diff --git a/share/build-scripts/debconf.d/0003-debconf b/share/build-scripts/debconf.d/0003-debconf
new file mode 100755
index 0000000..c1c4e79
--- /dev/null
+++ b/share/build-scripts/debconf.d/0003-debconf
@@ -0,0 +1,1285 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set -e
+
+DEBCONF_NOWARNINGS="true"
+export DEBCONF_NOWARNINGS
+
+. /usr/share/debconf/confmodule
+
+Mode ()
+{
+	db_get container/mode
+	MODE="${RET}" # select
+
+	if [ -z "${MODE}" ]
+	then
+		MODE="$(basename ${SCRIPT})"
+
+		case "${MODE}" in
+			debconf)
+				MODE="debian"
+				;;
+		esac
+	fi
+
+	echo "MODE=\"${MODE}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export MODE
+}
+
+Distribution ()
+{
+	db_get container/distribution
+	DISTRIBUTION="${RET}" # select
+
+	if [ -z "${DISTRIBUTION}" ]
+	then
+		case "${MODE}" in
+			debian)
+				db_subst container/distribution CHOICES "Debian GNU/Linux 10 \"buster\", Debian GNU/Linux 11 \"bullseye\", Debian GNU/Linux testing/bookworm, Debian GNU/Linux unstable/sid"
+				db_subst container/distribution CHOICES_C "buster, bullseye, bookworm, sid"
+
+				db_set container/distribution bullseye
+				db_fset container/distribution seen false
+				;;
+
+			progress-linux)
+				db_subst container/distribution CHOICES "Progress Linux 5 (engywuck), Progress Linux 5.99 (engywuck-backports), Progress Linux 6 (fuchur), Progress Linux 6.99 (fuchur-backports)"
+				db_subst container/distribution CHOICES_C "engywuck, engywuck-backports, fuchur, fuchur-backports"
+
+				db_set container/distribution fuchur-backports
+				db_fset container/distribution seen false
+				;;
+		esac
+
+		db_settitle container/title
+		db_input high container/distribution || true
+		db_go
+
+		db_get container/distribution
+		DISTRIBUTION="${RET}" # select
+	fi
+
+	echo "DISTRIBUTION=\"${DISTRIBUTION}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export DISTRIBUTION
+}
+
+Parent_distribution ()
+{
+	db_get container/parent-distribution
+	PARENT_DISTRIBUTION="${RET}"
+
+	if [ -z "${PARENT_DISTRIBUTION}" ]
+	then
+		case "${MODE}" in
+			progress-linux)
+				case "${DISTRIBUTION}" in
+					engywuck*)
+						PARENT_DISTRIBUTION="buster"
+						;;
+
+					fuchur*)
+						PARENT_DISTRIBUTION="bullseye"
+						;;
+				esac
+				;;
+
+			*)
+				PARENT_DISTRIBUTION="${DISTRIBUTION}"
+				;;
+		esac
+	fi
+
+	echo "PARENT_DISTRIBUTION=\"${PARENT_DISTRIBUTION}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export PARENT_DISTRIBUTION
+}
+
+Architecture ()
+{
+	case "$(dpkg --print-architecture)" in
+		amd64)
+			DEFAULT="amd64"
+			CHOICES="Automatic, 32-bit PC (i386), 64-bit PC (amd64)"
+			CHOICES_C="auto, i386, amd64"
+			;;
+
+		arm64)
+			DEFAULT="arm64"
+			CHOICES="Automatic, RaspberryPi 3 (arm64)"
+			CHOICES_C="auto, arm64"
+			;;
+
+		i386)
+			case "$(uname -m)" in
+				x86_64)
+					DEFAULT="amd64"
+					CHOICES="Automatic, 32-bit PC (i386), 64-bit PC (amd64)"
+					CHOICES_C="auto, i386, amd64"
+					;;
+
+				*)
+					DEFAULT="i386"
+					CHOICES=""
+					CHOICES_C=""
+					;;
+			esac
+			;;
+
+		*)
+			echo "E: Architecture current not yet supported."
+			exit 1
+	esac
+
+	db_get container/architecture
+	ARCHITECTURE="${RET}" # select
+
+	if [ -z "${ARCHITECTURE}" ] && [ -n "${CHOICES}" ]
+	then
+		db_subst container/architecture CHOICES ${CHOICES}
+		db_subst container/architecture CHOICES_C ${CHOICES_C}
+
+		db_set container/architecture ${DEFAULT}
+		db_fset container/distribution seen false
+
+		db_settitle container/title
+		db_input high container/architecture || true
+		db_go
+
+		db_get container/architecture
+		ARCHITECTURE="${RET}" # select
+	fi
+
+	case "${ARCHITECTURE}" in
+		auto)
+			ARCHITECTURE="${DEFAULT}"
+			;;
+	esac
+
+	echo "ARCHITECTURE=\"${ARCHITECTURE}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export ARCHITECTURE
+}
+
+Archives ()
+{
+	db_get container/archives
+	ARCHIVES="${RET}" # multiselect
+
+	if [ -z "${ARCHIVES}" ]
+	then
+		case "${MODE}" in
+			debian)
+				case "${PARENT_DISTRIBUTION}" in
+					sid)
+						db_subst container/archives CHOICES "sid, experimental"
+
+						db_set container/archives "sid"
+						db_fset container/archives seen false
+						;;
+
+					*)
+						db_subst container/archives CHOICES "${DISTRIBUTION}, ${DISTRIBUTION}-security, ${DISTRIBUTION}-updates, ${DISTRIBUTION}-backports, ${DISTRIBUTION}-proposed-updates"
+
+						case "${PARENT_DISTRIBUTION}" in
+							sid)
+								db_set container/archives "sid"
+								;;
+
+							*)
+								db_set container/archives "${DISTRIBUTION}, ${DISTRIBUTION}-security, ${DISTRIBUTION}-updates"
+								;;
+						esac
+
+						db_fset container/archives seen false
+						;;
+				esac
+				;;
+
+			progress-linux)
+				DIST="$(echo ${DISTRIBUTION} | sed -e 's|-backports||')"
+
+				db_subst container/archives CHOICES "${DIST}, ${DIST}-security, ${DIST}-updates, ${DIST}-extras, ${DIST}-backports, ${DIST}-backports-extras"
+
+				db_set container/archives "${DIST}, ${DIST}-security, ${DIST}-updates, ${DIST}-extras, ${DIST}-backports, ${DIST}-backports-extras"
+				db_fset container/archives seen false
+				;;
+		esac
+
+		db_settitle container/title
+		db_input high container/archives || true
+		db_go
+
+		db_get container/archives
+		ARCHIVES="${RET}" # multiselect
+	fi
+
+	ARCHIVES="$(echo ${ARCHIVES} | sed -e 's|, | |g')"
+
+	echo "ARCHIVES=\"${ARCHIVES}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export ARCHIVES
+}
+
+Parent_archives ()
+{
+	db_get container/parent-archives
+	PARENT_ARCHIVES="${RET}" # multiselect (w/o empty)
+
+	if [ -z "${PARENT_ARCHIVES}" ]
+	then
+		case "${MODE}" in
+			progress-linux)
+				db_subst container/parent-archives CHOICES "${PARENT_DISTRIBUTION}, ${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates, ${PARENT_DISTRIBUTION}-backports, ${PARENT_DISTRIBUTION}-proposed-updates"
+
+				case "${PARENT_DISTRIBUTION}" in
+					*)
+						db_set container/parent-archives "${PARENT_DISTRIBUTION}, ${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates"
+						;;
+				esac
+
+				db_fset container/parent-archives seen false
+
+				db_settitle container/title
+				db_input high container/parent-archives || true
+				db_go
+				;;
+
+			*)
+				db_subst container/parent-archives CHOICES "${DISTRIBUTION}, ${DISTRIBUTION}-security, ${DISTRIBUTION}-updates, ${DISTRIBUTION}-backports, ${DISTRIBUTION}-proposed-updates"
+
+				db_set container/parent-archives "${ARCHIVES}"
+				db_fset container/parent-archives seen true
+				;;
+		esac
+
+		db_get container/parent-archives
+		PARENT_ARCHIVES="${RET}" # multiselect (w/o empty)
+
+		if [ -z "${PARENT_ARCHIVES}" ]
+		then
+			case "${MODE}" in
+				progress-linux)
+					case "${PARENT_DISTRIBUTION}" in
+						*)
+							PARENT_ARCHIVES="${PARENT_DISTRIBUTION}, ${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates"
+							;;
+					esac
+					;;
+
+				*)
+					PARENT_ARCHIVES="${ARCHIVES}"
+					;;
+			esac
+		fi
+	fi
+
+	PARENT_ARCHIVES="$(echo ${PARENT_ARCHIVES} | sed -e 's|, | |g')"
+
+	echo "PARENT_ARCHIVES=\"${PARENT_ARCHIVES}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export PARENT_ARCHIVES
+}
+
+Mirror ()
+{
+	db_get container/mirror
+	MIRROR="${RET}"
+
+	if [ -z "${MIRROR}" ]
+	then
+		case "${MODE}" in
+			debian)
+				db_set container/mirror https://deb.debian.org/debian
+				db_fset container/mirror seen false
+				;;
+
+			progress-linux)
+				db_set container/mirror https://deb.progress-linux.org/packages
+				db_fset container/mirror seen false
+				;;
+		esac
+
+		db_settitle container/title
+		db_input high container/mirror || true
+		db_go
+
+		db_get container/mirror
+		MIRROR="${RET}" # string (w/o empty)
+
+		if [ -z "${MIRROR}" ]
+		then
+			case "${MODE}" in
+				debian)
+					MIRROR="https://deb.debian.org/debian"
+					;;
+
+				progress-linux)
+					MIRROR="https://deb.progress-linux.org/packages"
+					;;
+			esac
+		fi
+	fi
+
+	echo "MIRROR=\"${MIRROR}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export MIRROR
+}
+
+Mirror_security ()
+{
+	if ! echo "${ARCHIVES}" | grep -qs "-security"
+	then
+		return 0
+	fi
+
+	db_get container/mirror-security
+	MIRROR_SECURITY="${RET}" # string (w/o empty)
+
+	if [ -z "${MIRROR_SECURITY}" ]
+	then
+		case "${MODE}" in
+			debian)
+				db_set container/mirror-security https://security.debian.org
+				db_fset container/mirror-security seen false
+				;;
+
+			*)
+				db_set container/mirror-security ${MIRROR}
+				db_fset container/mirror-security seen true
+				;;
+		esac
+
+		db_settitle container/title
+		db_input high container/mirror-security || true
+		db_go
+
+		db_get container/mirror-security
+		MIRROR_SECURITY="${RET}" # string (w/o empty)
+
+		if [ -z "${MIRROR_SECURITY}" ]
+		then
+			case "${MODE}" in
+				debian)
+					MIRROR_SECURITY="https://security.debian.org"
+					;;
+
+				*)
+					MIRROR_SECURITY="${MIRROR}"
+					;;
+			esac
+		fi
+	fi
+
+	echo "MIRROR_SECURITY=\"${MIRROR_SECURITY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export MIRROR_SECURITY
+}
+
+Parent_mirror ()
+{
+	db_get container/parent-mirror
+	PARENT_MIRROR="${RET}" # string (w/o empty)
+
+	if [ -z "${PARENT_MIRROR}" ]
+	then
+		case "${MODE}" in
+			progress-linux)
+				db_set container/parent-mirror https://deb.debian.org/debian
+				db_fset container/parent-mirror seen false
+
+				db_settitle container/title
+				db_input high container/parent-mirror || true
+				db_go
+				;;
+
+			*)
+				db_set container/parent-mirror ${MIRROR}
+				db_fset container/parent-mirror seen true
+				;;
+		esac
+
+		db_get container/parent-mirror
+		PARENT_MIRROR="${RET}" # string (w/o empty)
+
+		if [ -z "${PARENT_MIRROR}" ]
+		then
+			case "${MODE}" in
+				progress-linux)
+					PARENT_MIRROR="https://deb.debian.org/debian"
+					;;
+
+				*)
+					PARENT_MIRROR="${MIRROR}"
+					;;
+			esac
+		fi
+	fi
+
+	echo "PARENT_MIRROR=\"${PARENT_MIRROR}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export PARENT_MIRROR
+}
+
+Parent_mirror_security ()
+{
+	if ! echo "${PARENT_ARCHIVES}" | grep -qs "-security"
+	then
+		return 0
+	fi
+
+	db_get container/parent-mirror-security
+	PARENT_MIRROR_SECURITY="${RET}" # string (w/o empty)
+
+	if [ -z "${PARENT_MIRROR_SECURITY}" ]
+	then
+		case "${MODE}" in
+			progress-linux)
+				db_set container/parent-mirror-security https://security.debian.org
+				db_fset container/parent-mirror-security seen false
+
+				db_settitle container/title
+				db_input high container/parent-mirror-security || true
+				db_go
+				;;
+
+			*)
+				db_set container/parent-mirror-security ${MIRROR_SECURITY}
+				db_fset container/parent-mirror-security seen true
+				;;
+		esac
+
+		db_get container/parent-mirror-security
+		PARENT_MIRROR_SECURITY="${RET}" # string (w/o empty)
+
+		if [ -z "${PARENT_MIRROR_SECURITY}" ]
+		then
+			case "${MODE}" in
+				progress-linux)
+					PARENT_MIRROR_SECURITY="https://security.debian.org"
+					;;
+
+				*)
+					PARENT_MIRROR_SECURITY="${MIRROR_SECURITY}"
+					;;
+			esac
+		fi
+	fi
+
+	echo "PARENT_MIRROR_SECURITY=\"${PARENT_MIRROR_SECURITY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export PARENT_MIRROR_SECURITY
+}
+
+Archive_areas ()
+{
+	db_get container/archive-areas
+	ARCHIVE_AREAS="${RET}"
+
+	if [ -z "${ARCHIVE_AREAS}" ]
+	then
+		case "${MODE}" in
+			progress-linux)
+				db_subst container/archive-areas CHOICES "main, contrib, non-free"
+
+				db_set container/archive-areas "main, contrib, non-free"
+				db_fset container/archive-areas seen false
+				;;
+
+			*)
+				db_subst container/archive-areas CHOICES "main, contrib, non-free"
+
+				db_set container/archive-areas "main"
+				db_fset container/archive-areas seen false
+				;;
+		esac
+
+		db_settitle container/title
+		db_input high container/archive-areas || true
+		db_go
+
+		db_get container/archive-areas
+		ARCHIVE_AREAS="${RET}" # multiselect (w/o empty)
+
+		if [ -z "${ARCHIVE_AREAS}" ]
+		then
+			case "${MODE}" in
+				debian)
+					ARCHIVE_AREAS="main"
+					;;
+
+				progress-linux)
+					ARCHIVE_AREAS="main, contrib, non-free"
+					;;
+			esac
+		fi
+	fi
+
+	ARCHIVE_AREAS="$(echo ${ARCHIVE_AREAS} | sed -e 's| ||g')"
+
+	echo "ARCHIVE_AREAS=\"${ARCHIVE_AREAS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export ARCHIVE_AREAS
+}
+
+Parent_archive_areas ()
+{
+	db_get container/parent-archive-areas
+	PARENT_ARCHIVE_AREAS="${RET}" # multiselect (w/o empty)
+
+	if [ -z "${PARENT_ARCHIVE_AREAS}" ]
+	then
+		case "${MODE}" in
+			progress-linux)
+				db_subst container/parent-archive-areas CHOICES "main, contrib, non-free"
+
+				db_set container/parent-archive-areas "main, contrib, non-free"
+				db_fset container/parent-archive-areas seen false
+
+				db_settitle container/title
+				db_input high container/parent-archive-areas || true
+				db_go
+				;;
+
+			*)
+				db_subst container/parent-archive-areas CHOICES "${ARCHIVE_AREAS}"
+
+				db_set container/parent-archive-areas "${ARCHIVE_AREAS}"
+				db_fset container/parent-archive-areas seen true
+				;;
+		esac
+
+		db_get container/parent-archive-areas
+		PARENT_ARCHIVE_AREAS="${RET}" # multiselect (w/o empty)
+
+		if [ -z "${PARENT_ARCHIVE_AREAS}" ]
+		then
+			case "${MODE}" in
+				progress-linux)
+					PARENT_ARCHIVE_AREAS="main, contrib, non-free"
+					;;
+
+				*)
+					PARENT_ARCHIVE_AREAS="${ARCHIVE_AREAS}"
+					;;
+			esac
+		fi
+	fi
+
+	PARENT_ARCHIVE_AREAS="$(echo ${PARENT_ARCHIVE_AREAS} | sed -e 's| ||g')"
+
+	echo "PARENT_ARCHIVE_AREAS=\"${PARENT_ARCHIVE_AREAS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export PARENT_ARCHIVE_AREAS
+}
+
+Packages ()
+{
+	db_get container/packages
+	PACKAGES="${RET}" # string (w/ empty)
+
+	if [ -z "${PACKAGES}" ]
+	then
+		db_settitle container/title
+		db_input high container/packages || true
+		db_go
+
+		db_get container/packages
+		PACKAGES="${RET}" # string (w/ empty)
+	fi
+
+	echo "PACKAGES=\"${PACKAGES}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export PACKAGES
+}
+
+Local_archives ()
+{
+	NUMBER="1"
+
+	while db_get container/archive${NUMBER}/repository && [ "${RET}" ]
+	do
+		mkdir -p "${DEBCONF_TMPDIR}/apt"
+
+		REPOSITORY="${RET#deb }"
+
+		LIST="archive${NUMBER}.list"
+		if db_get container/archive${NUMBER}/list
+		then
+			LIST="$(basename ${RET} .list).list"
+		fi
+
+		COMMENT=""
+		if db_get container/archive${NUMBER}/comment
+		then
+			COMMENT="${RET}"
+
+			echo "# ${COMMENT}" > "${DEBCONF_TMPDIR}/apt/${LIST}"
+		fi
+
+		echo "deb ${REPOSITORY}" >> "${DEBCONF_TMPDIR}/apt/${LIST}"
+
+		if db_get container/archive${NUMBER}/source && [ "$RET" = true ]
+		then
+			echo "deb-src ${REPOSITORY}" >> "${DEBCONF_TMPDIR}/apt/${LIST}"
+		fi
+
+		KEY=""
+		if db_get container/archive${NUMBER}/key
+		then
+			KEY="${RET}"
+
+			wget -q "${KEY}" -O "${DEBCONF_TMPDIR}/apt/$(basename ${LIST} .list).key"
+		fi
+
+		PREFERENCES_PACKAGE=""
+		PREFERENCES_PIN=""
+		PREFERENCES_PIN_PRIORITY=""
+		if db_get container/archive${NUMBER}/preferences-package
+		then
+			PREFERENCES_PACKAGE="${RET}"
+
+			if db_get container/archive${NUMBER}/preferences-pin
+			then
+				PREFERENCES_PIN="${RET}"
+			fi
+
+			if db_get container/archive${NUMBER}/preferences-pin-priority
+			then
+				PREFERENCES_PIN_PRIORITY="${RET}"
+			fi
+
+			if [ -n "${PREFERENCES_PACKAGE}" ] || [ -n "${PREFERENCES_PIN}" ] || [ -n "${PREFERENCES_PIN_PRIORITY}" ]
+			then
+
+cat > "${DEBCONF_TMPDIR}/apt/$(basename ${LIST} .list).pref" << EOF
+Package: ${PREFERENCES_PACKAGE}
+Pin: ${PREFERENCES_PIN}
+Pin-Priority: ${PREFERENCES_PIN_PRIORITY}
+EOF
+
+			fi
+		fi
+
+		NUMBER="$((${NUMBER} + 1))"
+	done
+}
+
+Network_defaults ()
+{
+	HOSTNAME_SHORT="$(echo veth-$(echo ${NAME} | cut -c-8)-0)"
+	VETH_NAME="${HOSTNAME_SHORT}"
+
+	NETWORK1_VETH="${NETWORK1_VETH:-$VETH_NAME}"
+	NETWORK1_BRIDGE="${NETWORK1_BRIDGE:-bridge0}"
+
+	NETWORK1_IPV4_METHOD="${NETWORK1_IPV4_METHOD:-dhcp}"
+	NETWORK1_IPV4_ADDRESS="${NETWORK1_IPV4_ADDRESS:-192.168.1.2}"
+	NETWORK1_IPV4_NETMASK="${NETWORK1_IPV4_NETMASK:-24}"
+
+	NETWORK1_IPV6_METHOD="${NETWORK1_IPV6_METHOD:-none}"
+	NETWORK1_IPV6_ADDRESS="${NETWORK1_IPV6_ADDRESS:-fc00::2}"
+	NETWORK1_IPV6_NETMASK="${NETWORK1_IPV6_NETMASK:-7}"
+
+	if [ "${NETWORK1_IPV4_METHOD}" = "static" ] || [ "${NETWORK1_IPV6_METHOD}" = "static" ]
+	then
+		if [ -e /etc/resolv.conf ]
+		then
+			NAMESERVER_SERVER="${NAMESERVER_SERVER:-$(awk '/^nameserver / {$1=""; print $0}' /etc/resolv.conf)}"
+			# Workaround to get rid of newlines since debconf can not handle multiline return value in assignments
+			NAMESERVER_SERVER="$(echo ${NAMESERVER_SERVER})"
+
+			NAMESERVER_DOMAIN="${NAMESERVER_DOMAIN:-$(awk '/^domain / {$1=""; print $0}' /etc/resolv.conf)}"
+			NAMESERVER_SEARCH="${NAMESERVER_SEARCH:-$(awk '/^search / {$1=""; print $0}' /etc/resolv.conf)}"
+			NAMESERVER_OPTIONS="${NAMESERVER_OPTIONS:-$(awk '/^options / {$1=""; print $0}' /etc/resolv.conf)}"
+		fi
+	fi
+}
+
+Network ()
+{
+	db_get container/network1/bridge
+	NETWORK1_BRIDGE="${RET}" # string (w/o empty)
+
+	db_get container/network1/veth
+	NETWORK1_VETH="${RET}" # string (w/o empty)
+
+	db_get container/network1/ipv4-method
+	NETWORK1_IPV4_METHOD="${RET}" # select
+
+	db_get container/network1/ipv4-comment
+	NETWORK1_IPV4_COMMENT="${RET}" # string (w/ empty)
+
+	db_get container/network1/ipv4-address
+	NETWORK1_IPV4_ADDRESS="${RET}" # string (w/o empty)
+
+	db_get container/network1/ipv4-gateway
+	NETWORK1_IPV4_GATEWAY="${RET}" # string (w/ empty)
+
+	db_get container/network1/ipv4-netmask
+	NETWORK1_IPV4_NETMASK="${RET}" # string (w/o empty)
+
+	db_get container/network1/ipv4-post-up
+	NETWORK1_IPV4_POST_UP="${RET}" # string (w/ empty)
+
+	db_get container/network1/ipv4-post-down
+	NETWORK1_IPV4_POST_DOWN="${RET}" # string (w/ empty)
+
+	db_get container/network1/ipv6-method
+	NETWORK1_IPV6_METHOD="${RET}" # select
+
+	db_get container/network1/ipv6-comment
+	NETWORK1_IPV6_COMMENT="${RET}" # string (w/ empty)
+
+	db_get container/network1/ipv6-address
+	NETWORK1_IPV6_ADDRESS="${RET}" # string (w/o empty)
+
+	db_get container/network1/ipv6-gateway
+	NETWORK1_IPV6_GATEWAY="${RET}" # string (w/ empty)
+
+	db_get container/network1/ipv6-netmask
+	NETWORK1_IPV6_NETMASK="${RET}" # string (w/o empty)
+
+	db_get container/network1/ipv6-post-up
+	NETWORK1_IPV6_POST_UP="${RET}" # string (w/ empty)
+
+	db_get container/network1/ipv6-post-down
+	NETWORK1_IPV6_POST_DOWN="${RET}" # string (w/ empty)
+
+	db_get container/nameserver/server
+	NAMESERVER_SERVER="${RET}" # string (w/ empty)
+
+	db_get container/nameserver/domain
+	NAMESERVER_DOMAIN="${RET}" # string (w/ empty)
+
+	db_get container/nameserver/search
+	NAMESERVER_SEARCH="${RET}" # string (w/ empty)
+
+	db_get container/nameserver/options
+	NAMESERVER_OPTIONS="${RET}" # string (w/ empty)
+
+	Network_defaults
+
+	db_set container/network1/bridge "${NETWORK1_BRIDGE}"
+	db_fset container/network1/bridge seen false
+
+	db_set container/network1/veth "${NETWORK1_VETH}"
+	db_fset container/network1/veth seen false
+
+	db_set container/network1/ipv4-method "${NETWORK1_IPV4_METHOD}"
+	db_fset container/network1/ipv4-method seen false
+
+	db_set container/network1/ipv4-comment "${NETWORK1_IPV4_COMMENT}"
+	db_fset container/network1/ipv4-comment seen false
+
+	db_set container/network1/ipv4-address "${NETWORK1_IPV4_ADDRESS}"
+	db_fset container/network1/ipv4-address seen false
+
+	db_set container/network1/ipv4-gateway "${NETWORK1_IPV4_GATEWAY}"
+	db_fset container/network1/ipv4-gateway seen false
+
+	db_set container/network1/ipv4-netmask "${NETWORK1_IPV4_NETMASK}"
+	db_fset container/network1/ipv4-netmask seen false
+
+	db_set container/network1/ipv4-post-up "${NETWORK1_IPV4_POST_UP}"
+	db_fset container/network1/ipv4-post-up seen false
+
+	db_set container/network1/ipv4-post-down "${NETWORK1_IPV4_POST_DOWN}"
+	db_fset container/network1/ipv4-post-down seen false
+
+	db_set container/network1/ipv6-method "${NETWORK1_IPV6_METHOD}"
+	db_fset container/network1/ipv6-method seen false
+
+	db_set container/network1/ipv6-comment "${NETWORK1_IPV6_COMMENT}"
+	db_fset container/network1/ipv6-comment seen false
+
+	db_set container/network1/ipv6-address "${NETWORK1_IPV6_ADDRESS}"
+	db_fset container/network1/ipv6-address seen false
+
+	db_set container/network1/ipv6-gateway "${NETWORK1_IPV6_GATEWAY}"
+	db_fset container/network1/ipv6-gateway seen false
+
+	db_set container/network1/ipv6-netmask "${NETWORK1_IPV6_NETMASK}"
+	db_fset container/network1/ipv6-netmask seen false
+
+	db_set container/network1/ipv6-post-up "${NETWORK1_IPV6_POST_UP}"
+	db_fset container/network1/ipv6-post-up seen false
+
+	db_set container/network1/ipv6-post-down "${NETWORK1_IPV6_POST_DOWN}"
+	db_fset container/network1/ipv6-post-down seen false
+
+	db_set container/nameserver/server "${NAMESERVER_SERVER}"
+	db_fset container/nameserver/server seen false
+
+	db_set container/nameserver/domain "${NAMESERVER_DOMAIN}"
+	db_fset container/nameserver/domain seen false
+
+	db_set container/nameserver/search "${NAMESERVER_SEARCH}"
+	db_fset container/nameserver/search seen false
+
+	db_set container/nameserver/options "${NAMESERVER_OPTIONS}"
+	db_fset container/nameserver/options seen false
+
+	db_get container/network1/bridge
+	NETWORK1_BRIDGE="${RET}" # select
+
+	db_get container/network1/veth
+	NETWORK1_VETH="${RET}" # select
+
+	db_settitle container/title
+	db_input high container/network1/ipv4-method || true
+	db_go
+
+	db_get container/network1/ipv4-method
+	NETWORK1_IPV4_METHOD="${RET}" # select
+
+	case "${NETWORK1_IPV4_METHOD}" in
+		none|dhcp)
+			;;
+
+		static)
+			db_settitle container/title
+			db_input high container/network1/ipv4-comment || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv4-address || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv4-gateway || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv4-netmask || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv4-post-up || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv4-post-down || true
+			db_go
+			;;
+	esac
+
+	db_settitle container/title
+	db_input high container/network1/ipv6-method || true
+	db_go
+
+	db_get container/network1/ipv6-method
+	NETWORK1_IPV6_METHOD="${RET}" # select
+
+	case "${NETWORK1_IPV6_METHOD}" in
+		none|dhcp)
+			;;
+
+		static)
+			db_settitle container/title
+			db_input high container/network1/ipv6-comment || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv6-address || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv6-gateway || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv6-netmask || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv6-post-up || true
+			db_go
+
+			db_settitle container/title
+			db_input high container/network1/ipv6-post-down || true
+			db_go
+			;;
+	esac
+
+	if [ "${NETWORK1_IPV4_METHOD}" = "static" ] || [ "${NETWORK1_IPV6_METHOD}" = "static" ]
+	then
+		db_settitle container/title
+		db_input high container/nameserver/server || true
+		db_go
+	fi
+
+	NUMBER="1"
+
+	while ( db_get container/network${NUMBER}/ipv4-method && [ "${RET}" ] ) || ( db_get container/network${NUMBER}/ipv6-method && [ "${RET}" ] )
+	do
+		if db_get container/network${NUMBER}/bridge
+		then
+			eval NETWORK${NUMBER}_BRIDGE="\"${RET}\"" # string (w/o empty)
+		fi
+
+		if db_get container/network${NUMBER}/veth
+		then
+			eval NETWORK${NUMBER}_VETH="\"${RET}\"" # string (w/o empty)
+		fi
+
+		NUMBER="$((${NUMBER} + 1))"
+	done
+
+	NETWORK_NUMBER="$((${NUMBER} - 1))"
+
+	for NUMBER in $(seq 1 ${NETWORK_NUMBER})
+	do
+		if db_get container/network${NUMBER}/ipv4-comment
+		then
+			eval NETWORK${NUMBER}_IPV4_COMMENT="\"${RET}\"" # string (w/ empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv4-method
+		then
+			eval NETWORK${NUMBER}_IPV4_METHOD="\"${RET}\"" # select
+		fi
+
+		if db_get container/network${NUMBER}/ipv4-address
+		then
+			eval NETWORK${NUMBER}_IPV4_ADDRESS="\"${RET}\"" # string (w/o empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv4-gateway
+		then
+			eval NETWORK${NUMBER}_IPV4_GATEWAY="\"${RET}\"" # string (w/ empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv4-netmask
+		then
+			eval NETWORK${NUMBER}_IPV4_NETMASK="\"${RET}\"" # string (w/o empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv4-post-up
+		then
+			eval NETWORK${NUMBER}_IPV4_POST_UP="\"${RET}\"" # string (w/ empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv4-post-down
+		then
+			eval NETWORK${NUMBER}_IPV4_POST_DOWN="\"${RET}\"" # string (w/ empty)
+		fi
+	done
+
+	for NUMBER in $(seq 1 ${NETWORK_NUMBER})
+	do
+		if db_get container/network${NUMBER}/ipv6-comment
+		then
+			eval NETWORK${NUMBER}_IPV6_COMMENT="\"${RET}\"" # string (w/ empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv6-method
+		then
+			eval NETWORK${NUMBER}_IPV6_METHOD="\"${RET}\"" # select
+		fi
+
+		if db_get container/network${NUMBER}/ipv6-address
+		then
+			eval NETWORK${NUMBER}_IPV6_ADDRESS="\"${RET}\"" # string (w/o empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv6-gateway
+		then
+			eval NETWORK${NUMBER}_IPV6_GATEWAY="\"${RET}\"" # string (w/ empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv6-netmask
+		then
+			eval NETWORK${NUMBER}_IPV6_NETMASK="\"${RET}\"" # string (w/o empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv6-post-up
+		then
+			eval NETWORK${NUMBER}_IPV6_POST_UP="\"${RET}\"" # string (w/ empty)
+		fi
+
+		if db_get container/network${NUMBER}/ipv6-post-down
+		then
+			eval NETWORK${NUMBER}_IPV6_POST_DOWN="\"${RET}\"" # string (w/ empty)
+		fi
+	done
+
+	db_get container/nameserver/server
+	NAMESERVER_SERVER="${RET}" # string (w/ empty)
+
+	db_get container/nameserver/domain
+	NAMESERVER_DOMAIN="${RET}" # string (w/ empty)
+
+	db_get container/nameserver/search
+	NAMESERVER_SEARCH="${RET}" # string (w/ empty)
+
+	db_get container/nameserver/options
+	NAMESERVER_OPTIONS="${RET}" # string (w/ empty)
+
+	Network_defaults
+
+	echo "NETWORK_NUMBER=\"${NETWORK_NUMBER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	for NUMBER in $(seq 1 ${NETWORK_NUMBER})
+	do
+		eval BRIDGE="$`echo NETWORK${NUMBER}_BRIDGE`"
+		echo "NETWORK${NUMBER}_BRIDGE=\"${BRIDGE}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval VETH="$`echo NETWORK${NUMBER}_VETH`"
+		echo "NETWORK${NUMBER}_VETH=\"${VETH}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval COMMENT="$`echo NETWORK${NUMBER}_IPV4_COMMENT`"
+		echo "NETWORK${NUMBER}_IPV4_COMMENT=\"${COMMENT}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval METHOD="$`echo NETWORK${NUMBER}_IPV4_METHOD`"
+		echo "NETWORK${NUMBER}_IPV4_METHOD=\"${METHOD}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval ADDRESS="$`echo NETWORK${NUMBER}_IPV4_ADDRESS`"
+		echo "NETWORK${NUMBER}_IPV4_ADDRESS=\"${ADDRESS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval GATEWAY="$`echo NETWORK${NUMBER}_IPV4_GATEWAY`"
+		echo "NETWORK${NUMBER}_IPV4_GATEWAY=\"${GATEWAY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval NETMASK="$`echo NETWORK${NUMBER}_IPV4_NETMASK`"
+		echo "NETWORK${NUMBER}_IPV4_NETMASK=\"${NETMASK}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval POST_UP="$`echo NETWORK${NUMBER}_IPV4_POST_UP`"
+		echo "NETWORK${NUMBER}_IPV4_POST_UP=\"${POST_UP}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval POST_DOWN="$`echo NETWORK${NUMBER}_IPV4_POST_DOWN`"
+		echo "NETWORK${NUMBER}_IPV4_POST_DOWN=\"${POST_DOWN}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval COMMENT="$`echo NETWORK${NUMBER}_IPV6_COMMENT`"
+		echo "NETWORK${NUMBER}_IPV6_COMMENT=\"${COMMENT}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval METHOD="$`echo NETWORK${NUMBER}_IPV6_METHOD`"
+		echo "NETWORK${NUMBER}_IPV6_METHOD=\"${METHOD}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval ADDRESS="$`echo NETWORK${NUMBER}_IPV6_ADDRESS`"
+		echo "NETWORK${NUMBER}_IPV6_ADDRESS=\"${ADDRESS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval GATEWAY="$`echo NETWORK${NUMBER}_IPV6_GATEWAY`"
+		echo "NETWORK${NUMBER}_IPV6_GATEWAY=\"${GATEWAY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval NETMASK="$`echo NETWORK${NUMBER}_IPV6_NETMASK`"
+		echo "NETWORK${NUMBER}_IPV6_NETMASK=\"${NETMASK}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval POST_UP="$`echo NETWORK${NUMBER}_IPV6_POST_UP`"
+		echo "NETWORK${NUMBER}_IPV6_POST_UP=\"${POST_UP}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+		eval POST_DOWN="$`echo NETWORK${NUMBER}_IPV6_POST_DOWN`"
+		echo "NETWORK${NUMBER}_IPV6_POST_DOWN=\"${POST_DOWN}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	done
+
+	echo "NAMESERVER_SERVER=\"${NAMESERVER_SERVER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	echo "NAMESERVER_DOMAIN=\"${NAMESERVER_DOMAIN}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	echo "NAMESERVER_SEARCH=\"${NAMESERVER_SEARCH}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	echo "NAMESERVER_OPTIONS=\"${NAMESERVER_OPTIONS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+}
+
+Root_password ()
+{
+	if db_get container/root-password
+	then
+		ROOT_PASSWORD="${RET}" # string (w/o empty)
+	fi
+
+	if [ -z "${ROOT_PASSWORD}" ]
+	then
+		# Create a random password as suggestion for the user
+		RANDOM_PASSWORD="$(dd if=/dev/urandom bs=12 count=1 2> /dev/null | base64)"
+
+		db_set container/root-password ${RANDOM_PASSWORD}
+		db_fset container/root-password seen false
+
+		db_settitle container/title
+		db_input high container/root-password || true
+		db_go
+
+		db_get container/root-password
+		ROOT_PASSWORD="${RET}"
+
+		if [ -z "${ROOT_PASSWORD}" ]
+		then
+			# User did set not set a password, falling back to random password
+			ROOT_PASSWORD="${RANDOM_PASSWORD}"
+		fi
+
+		if [ "${ROOT_PASSWORD}" = "${RANDOM_PASSWORD}" ]
+		then
+			echo "ROOT_RANDOM_PASSWORD=\"true\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+		fi
+	fi
+
+	echo "ROOT_PASSWORD=\"${ROOT_PASSWORD}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+}
+
+Internal_options ()
+{
+	if db_get container/apt-recommends
+	then
+		APT_RECOMMENDS="${RET}" # boolean (w/ empty)
+	fi
+
+	echo "APT_RECOMMENDS=\"${APT_RECOMMENDS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/debconf-frontend
+	then
+		DEBCONF_FRONTEND="${RET}" # select
+	fi
+
+	DEBCONF_FRONTEND="${DEBCONF_FRONTEND:-dialog}"
+	echo "DEBCONF_FRONTEND=\"${DEBCONF_FRONTEND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/debconf-priority
+	then
+		DEBCONF_PRIORITY="${RET}" # select
+	fi
+
+	DEBCONF_PRIORITY="${DEBCONF_PRIORITY:-high}"
+	echo "DEBCONF_PRIORITY=\"${DEBCONF_PRIORITY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/container-command
+	then
+		CONTAINER_COMMAND="${RET}" # string (w/ empty)
+	fi
+
+	echo "CONTAINER_COMMAND=\"${CONTAINER_COMMAND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	NUMBER="1"
+
+	while db_get container/container-command${NUMBER} && [ "${RET}" ]
+	do
+		if db_get container/container-command${NUMBER}
+		then
+			eval CONTAINER_COMMAND${NUMBER}="\"${RET}\"" # string (w/o empty)
+		fi
+
+		NUMBER="$((${NUMBER} + 1))"
+	done
+
+	CONTAINER_COMMAND_NUMBER="$((${NUMBER} - 1))"
+
+	echo "CONTAINER_COMMAND_NUMBER=\"${CONTAINER_COMMAND_NUMBER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	for NUMBER in $(seq 1 ${CONTAINER_COMMAND_NUMBER})
+	do
+		eval COMMAND="$`echo CONTAINER_COMMAND${NUMBER}`"
+		echo "CONTAINER_COMMAND${NUMBER}=\"${COMMAND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	done
+
+	if db_get container/host-command
+	then
+		HOST_COMMAND="${RET}" # string (w/ empty)
+	fi
+
+	echo "HOST_COMMAND=\"${HOST_COMMAND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	NUMBER="1"
+
+	while db_get container/host-command${NUMBER} && [ "${RET}" ]
+	do
+		if db_get container/host-command${NUMBER}
+		then
+			eval HOST_COMMAND${NUMBER}="\"${RET}\"" # string (w/o empty)
+		fi
+
+		NUMBER="$((${NUMBER} + 1))"
+	done
+
+	HOST_COMMAND_NUMBER="$((${NUMBER} - 1))"
+
+	echo "HOST_COMMAND_NUMBER=\"${HOST_COMMAND_NUMBER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	for NUMBER in $(seq 1 ${HOST_COMMAND_NUMBER})
+	do
+		eval COMMAND="$`echo HOST_COMMAND${NUMBER}`"
+		echo "HOST_COMMAND${NUMBER}=\"${COMMAND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	done
+
+	if db_get container/auto
+	then
+		CNT_AUTO="${RET:-true}" # string (w/o empty)
+	fi
+
+	CNT_AUTO="${CNT_AUTO:-true}"
+	echo "CNT_AUTO=\"${CNT_AUTO}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/container-server
+	then
+		CNT_CONTAINER_SERVER="${RET:-FQDN}" # string (w/o empty)
+	fi
+
+	CNT_CONTAINER_SERVER="${CNT_CONTAINER_SERVER:-FQDN}"
+
+	case "${CNT_CONTAINER_SERVER}" in
+		FQDN)
+			CNT_CONTAINER_SERVER="$(hostname -f 2> /dev/null || hostname)"
+			;;
+	esac
+
+	echo "CNT_CONTAINER_SERVER=\"${CNT_CONTAINER_SERVER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/bind
+	then
+		BIND="${RET}" # string (w/ empty)
+	fi
+
+	echo "BIND=\"${BIND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/bind-ro
+	then
+		BIND_RO="${RET}" # string (w/ empty)
+	fi
+
+	echo "BIND_RO=\"${BIND_RO}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/overlay
+	then
+		CNT_OVERLAY="${RET}" # string (w/ empty)
+	fi
+
+	echo "CNT_OVERLAY=\"${CNT_OVERLAY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+
+	if db_get container/overlay-options
+	then
+		CNT_OVERLAY_OPTIONS="${RET}" # string (w/ empty)
+	fi
+
+	echo "CNT_OVERLAY_OPTIONS=\"${CNT_OVERLAY_OPTIONS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+}
+
+Mode
+
+Distribution
+Parent_distribution
+
+Architecture
+
+Archives
+Parent_archives
+
+Mirror
+Mirror_security
+
+Parent_mirror
+Parent_mirror_security
+
+Archive_areas
+Parent_archive_areas
+
+Packages
+Local_archives
+
+Network
+Root_password
+
+Internal_options
+
+db_stop
diff --git a/share/build-scripts/debconf.d/0003-debconf.templates b/share/build-scripts/debconf.d/0003-debconf.templates
new file mode 100644
index 0000000..73952a8
--- /dev/null
+++ b/share/build-scripts/debconf.d/0003-debconf.templates
@@ -0,0 +1,270 @@
+Template: container/title
+Type: title
+Description: compute-tools
+
+Template: container/mode
+Type: select
+Default:
+Choices-C: ${CHOICES_C}
+Choices: ${CHOICES}
+Description: Mode
+ Mode.
+
+Template: container/distribution
+Type: select
+Default:
+Choices-C: ${CHOICES_C}
+Choices: ${CHOICES}
+Description: Distribution
+ Distribution.
+
+Template: container/parent-distribution
+Type: select
+Default:
+Choices-C: ${CHOICES_C}
+Choices: ${CHOICES}
+Description: for internal use; can be preseeded
+ Parent Distribution.
+
+Template: container/architecture
+Type: select
+Default:
+Choices-C: ${CHOICES_C}
+Choices: ${CHOICES}
+Description: Architecture
+ Architecture.
+
+Template: container/archives
+Type: multiselect
+Default:
+Choices: ${CHOICES}
+Description: Archives
+ Archives.
+
+Template: container/parent-archives
+Type: multiselect
+Default:
+Choices: ${CHOICES}
+Description: Parent Archives
+ Parent Archives.
+
+Template: container/mirror
+Type: string
+Default:
+Description: Mirror
+ Mirror.
+
+Template: container/mirror-security
+Type: string
+Default:
+Description: Mirror Security
+ Mirror Security.
+
+Template: container/parent-mirror
+Type: string
+Default:
+Description: Parent Mirror
+ Parent Mirror.
+
+Template: container/parent-mirror-security
+Type: string
+Default:
+Description: Parent Mirror Security
+ Parent Mirror Security.
+
+Template: container/archive-areas
+Type: multiselect
+Default:
+Choices: ${CHOICES}
+Description: Archive Areas
+ Archive Areas.
+
+Template: container/parent-archive-areas
+Type: multiselect
+Default:
+Choices: ${CHOICES}
+Description: Parent Archive Areas
+ Parent Archive Areas.
+
+Template: container/packages
+Type: string
+Default:
+Description: Packages
+ Packages.
+
+Template: container/root-password
+Type: string
+Default:
+Description: Root password
+ Root password.
+
+Template: container/network1/bridge
+Type: string
+Default:
+Description: Bridge
+ Bridge.
+
+Template: container/network1/veth
+Type: string
+Default:
+Description: Veth name
+ Veth name.
+
+Template: container/network1/ipv4-method
+Type: select
+Choices: dhcp, static, none
+Default:
+Description: Ethernet Interface Method (IPv4)?
+ What method should be used to configure the ethernet interface?
+ .
+ This defaults to dhcp and will require that you run a dhcp-server in your
+ network.
+
+Template: container/network1/ipv4-comment
+Type: string
+Default:
+Description: Ethernet Interface Comment (IPv4)?
+ What optional comment would you like to give to the ethernet interface?
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv4-address
+Type: string
+Default:
+Description: Ethernet IP Address (IPv4)?
+ What should be the IP address of the current system?
+ .
+ This defaults to 192.168.1.2.
+
+Template: container/network1/ipv4-gateway
+Type: string
+Default:
+Description: Ethernet Gateway Address (IPv4)?
+ What should be the gateway address of the current system?
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv4-netmask
+Type: string
+Default:
+Description: Ethernet Network Mask (IPv4)?
+ What should be the netmask of the current system?
+ .
+ Note that only the suffix is supported, e.g. '24'
+ for /24 or '16' for /16.
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv4-post-up
+Type: string
+Default:
+Description: Ethernet post-up Command (IPv4)?
+ What should be the post-up command for eno1?
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv4-post-down
+Type: string
+Default:
+Description: Ethernet post-down Command (IPv4)?
+ What should be the post-down command for eno1?
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv6-method
+Type: select
+Choices: static, none
+Default:
+Description: Ethernet Interface Method (IPv6)?
+ What method should be used to configure the ethernet interface?
+ .
+ This defaults to none.
+
+Template: container/network1/ipv6-comment
+Type: string
+Default:
+Description: Ethernet Interface Comment (IPv6)?
+ What optional comment would you like to give to the ethernet interface?
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv6-address
+Type: string
+Default:
+Description: Ethernet IP Address (IPv6)?
+ What should be the IP address of the current system?
+ .
+ This defaults to fc00::1 (unique local unicast).
+
+Template: container/network1/ipv6-gateway
+Type: string
+Default:
+Description: Ethernet Gateway Address (IPv6)?
+ What should be the gateway address of the current system?
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv6-netmask
+Type: string
+Default:
+Description: Ethernet Network Mask (IPv6)?
+ What should be the netmask of the current system?
+ .
+ Note that only the suffix is supported, e.g. '64'
+ for /64 or '48' for /48.
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv6-post-up
+Type: string
+Default:
+Description: Ethernet post-up Command (IPv6)?
+ What should be the post-up command for eno1?
+ .
+ This defaults to empty.
+
+Template: container/network1/ipv6-post-down
+Type: string
+Default:
+Description: Ethernet post-down Command (IPv6)?
+ What should be the post-down command for eno1?
+ .
+ This defaults to empty.
+
+Template: container/nameserver/server
+Type: string
+Default:
+Description: Nameserver Addresses?
+ What should be the IP addresses of the nameservers of the current system?
+ .
+ This defaults to empty. Multiple nameservers can be separated by whitespace.
+
+Template: container/nameserver/domain
+Type: string
+Default:
+Description: Nameserver Local Domain Name?
+ What should be local domain name used for name resolution?
+ .
+ See resolv.conf(5) for more information about the 'domain' option.
+ .
+ This defaults to empty.
+
+Template: container/nameserver/search
+Type: string
+Default:
+Description: Nameserver Search List?
+ What should be search list for hostname lookups?
+ .
+ See resolv.conf(5) for more information about the 'search' option.
+ .
+ This defaults to empty.
+
+Template: container/nameserver/options
+Type: string
+Default:
+Description: Nameserver Resolver Options?
+ What should be the resolver options?
+ .
+ See resolv.conf(5) for more information about the 'options' option.
+ .
+ This defaults to empty.
diff --git a/share/build-scripts/debootstrap b/share/build-scripts/debootstrap
new file mode 100755
index 0000000..4c047ee
--- /dev/null
+++ b/share/build-scripts/debootstrap
@@ -0,0 +1,198 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set -e
+
+PROJECT="open-infrastructure"
+SOFTWARE="compute-tools"
+PROGRAM="container"
+
+SCRIPT="$(basename ${0})"
+
+HOOKS="/etc/${SOFTWARE}/hooks"
+MACHINES="/var/lib/machines"
+
+Parameters ()
+{
+	GETOPT_LONGOPTIONS="bind:,bind-ro:,script:,name:,architecture:,distribution:,mirror:,password:"
+	GETOPT_OPTIONS="b:,s:,n:,a:,d:,m:,p:"
+
+	PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${SCRIPT} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"
+
+	if [ "${?}" != "0" ]
+	then
+		echo "'${SCRIPT}': getopt exit" >&2
+		exit 1
+	fi
+
+	eval set -- "${PARAMETERS}"
+
+	while true
+	do
+		case "${1}" in
+			-b|--bind)
+				# ignore
+				shift 2
+				;;
+
+			--bind-ro)
+				# ignore
+				shift 2
+				;;
+
+			--cnt.auto)
+				# ignore
+				shift 2
+				;;
+
+			--cnt.container-server)
+				# ignore
+				shift 2
+				;;
+
+			-s|--script)
+				# ignore
+				shift 2
+				;;
+
+			-n|--name)
+				NAME="${2}"
+				shift 2
+				;;
+
+			-a|--architecture)
+				ARCHITECTURE="${2}"
+				shift 2
+				;;
+
+			-d|--distribution)
+				DISTRIBUTION="${2}"
+				shift 2
+				;;
+
+			-m|--mirror)
+				MIRROR="${2}"
+				shift 2
+				;;
+
+			-p|--password)
+				PASSWORD="${2}"
+				shift 2
+				;;
+
+			--)
+				shift 1
+				break
+				;;
+
+			*)
+				echo "'${SCRIPT}': getopt error" >&2
+				exit 1
+				;;
+		esac
+	done
+}
+
+Usage ()
+{
+	echo "Usage: container build -n|--name NAME -s|--script ${SCRIPT} -- [-a|--architecture ARCHITECTURE] [-d|--distribution DISTRIBUTION] [-m|--mirror MIRROR] [-p|--password PASSWORD}" >&2
+	exit 1
+}
+
+Parameters "${@}"
+
+if [ -z "${NAME}" ]
+then
+	Usage
+fi
+
+if [ -e "${MACHINES}/${NAME}" ]
+then
+	echo "'${NAME}': container already exists" >&2
+	exit 1
+fi
+
+case "${SCRIPT}" in
+	debootstrap)
+		BOOTSTRAP="/usr/sbin/debootstrap"
+		BOOTSTRAP_OPTIONS=""
+		;;
+
+	mmdebstrap)
+		BOOTSTRAP="/usr/bin/mmdebstrap"
+		BOOTSTRAP_OPTIONS="--mode=root"
+		;;
+esac
+
+if [ ! -x "${BOOTSTRAP}" ]
+then
+	echo "'${NAME}': ${BOOTSTRAP} - no such file." >&2
+	exit 1
+fi
+
+if [ "$(id -u)" -ne 0 ]
+then
+	echo "'${NAME}': need root privileges" >&2
+	exit 1
+fi
+
+ARCHITECTURE="${ARCHITECTURE:-$(dpkg --print-architecture)}"
+DISTRIBUTION="${DISTRIBUTION:-bullseye}"
+MIRROR="${MIRROR:-https://deb.debian.org/debian}"
+PASSWORD="${PASSWORD:-$(dd if=/dev/urandom bs=12 count=1 2> /dev/null | base64)}"
+
+INCLUDE="dbus"
+
+case "${MIRROR}" in
+	https*)
+		INCLUDE="${INCLUDE},apt-transport-https,ca-certificates"
+		;;
+esac
+
+# Pre hooks
+for FILE in "${HOOKS}/pre-${SCRIPT}".* "${HOOKS}/${NAME}.pre-${SCRIPT}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
+
+# Run
+mkdir -p "${MACHINES}"
+${BOOTSTRAP} ${BOOTSTRAP_OPTIONS} --arch=${ARCHITECTURE} --include=${INCLUDE} ${DISTRIBUTION} ${MACHINES}/${NAME} ${MIRROR}
+
+# Cleaning apt cache
+chroot "${MACHINES}/${NAME}" apt clean
+
+# Setting hostname
+echo "${NAME}" > "${MACHINES}/${NAME}/etc/hostname"
+
+# Setting root password
+echo root:${PASSWORD} | chroot "${MACHINES}/${NAME}" chpasswd
+echo "${NAME}: root password set to '${PASSWORD}'."
+
+# Post hooks
+for FILE in "${HOOKS}/post-${SCRIPT}".* "${HOOKS}/${NAME}.post-${SCRIPT}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done