Merging upstream version 20190304.

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

16 files changed, 1385 insertions, 15 deletions

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 7b6ecd1..de65ba1 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,6 +1,17 @@
+2019-03-04	Daniel Baumann <daniel.baumann@open-infrastructure.net>
+
+	* Releasing version 20190304.
+
+	[ Daniel Baumann ]
+	* Readding key command.
+	* Readding limit command.
+	* Readding curl container create script.
+	* Correcting version strings in changelog.
+	* Correcting variable name in makefile.
+
 2019-03-01	Daniel Baumann <daniel.baumann@open-infrastructure.net>
 
-	* Releasing version 2019-03-01.
+	* Releasing version 20190301.
 
 	[ Daniel Baumann ]
 	* Adding a end message in container create command.
@@ -25,7 +36,7 @@
 
 2019-02-22	Daniel Baumann <daniel.baumann@open-infrastructure.net>
 
-	* Releasing version 2019-02-22.
+	* Releasing version 20190222.
 
 	* Backward incompatible changes:
 	  - replaced Progress Linux 4 and Progress Linux 4+ support in
diff --git a/Makefile b/Makefile
index 95a8c7f..c5bdd5c 100644
--- a/Makefile
+++ b/Makefile
@@ -68,7 +68,7 @@ install: build
 	cp -r lib/* $(DESTDIR)/usr/lib/$(PROJECT)
 
 	mkdir -p $(DESTDIR)/usr/share/$(PROJECT)/$(PROGRAM)
-	cp -r VERSION.txt $(DESTDIR)/usr/share/$(PROJECT)/${PROGRAM}
+	cp -r VERSION.txt $(DESTDIR)/usr/share/$(PROJECT)/$(PROGRAM)
 	cp -r share/config share/hooks share/scripts $(DESTDIR)/usr/share/$(PROJECT)/$(PROGRAM)
 
 	mkdir -p $(DESTDIR)/usr/share/bash-completion/completions
diff --git a/VERSION.txt b/VERSION.txt
index 868c05a..6cc47af 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-20190301
+20190304
diff --git a/lib/container/key b/lib/container/key
new file mode 100755
index 0000000..1b59555
--- /dev/null
+++ b/lib/container/key
@@ -0,0 +1,152 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2019 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set -e
+
+PROJECT="open-infrastructure"
+PROGRAM="container"
+COMMAND="$(basename ${0})"
+
+KEYS="/etc/${PROJECT}/${PROGRAM}/keys"
+
+Parameters ()
+{
+	GETOPT_LONGOPTIONS="add:,list,remove:,"
+	GETOPT_OPTIONS="a:,l,r:,"
+
+	PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${COMMAND} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"
+
+	if [ "${?}" != "0" ]
+	then
+		echo "'${COMMAND}': getopt exit" >&2
+		exit 1
+	fi
+
+	eval set -- "${PARAMETERS}"
+
+	while true
+	do
+		case "${1}" in
+			-a|--add)
+				ADD="${2}"
+				ACTION="add"
+				shift 2
+				;;
+
+			-l|--list)
+				ACTION="list"
+				shift 1
+				;;
+
+			-r|--remove)
+				REMOVE="${2}"
+				ACTION="remove"
+				shift 2
+				;;
+
+			--)
+				shift 1
+				break
+				;;
+
+			*)
+				echo "'${COMMAND}': getopt error" >&2
+				exit 1
+				;;
+		esac
+	done
+}
+
+Usage ()
+{
+	echo "Usage: ${PROGRAM} ${COMMAND} [-a|--add KEY] [-l|--list] [-r|--remove KEY]" >&2
+	exit 1
+}
+
+Parameters "${@}"
+
+if [ -z "${ACTION}" ]
+then
+	Usage
+fi
+
+# Pre hooks
+for FILE in "${HOOKS}/pre-${COMMAND}".* "${HOOKS}/${NAME}.pre-${COMMAND}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
+
+# Run
+if [ ! -e "${KEYS}" ]
+then
+	mkdir -p "${KEYS}"
+
+	chown root:root "${KEYS}"
+	chmod 0700 "${KEYS}"
+
+cat > "${KEYS}/gnupg.conf" << EOF
+keyserver hkps://hkps.pool.sks-keyservers.net
+keyserver-options include-revoked
+keyserver-options no-honor-keyserver-url
+
+cert-digest-algo SHA512
+default-preference-list SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES ZLIB ZIP Uncompressed
+personal-cipher-preferences AES256 AES192 AES
+personal-compress-preferences ZLIB ZIP Uncompressed
+personal-digest-preferences SHA512 SHA384 SHA256 SHA224
+
+no-comments
+no-emit-version
+no-greeting
+keyid-format 0xlong
+list-options show-keyring
+list-options show-uid-validity
+verify-options show-uid-validity
+with-fingerprint
+
+charset utf-8
+EOF
+
+fi
+
+case "${ACTION}" in
+	add)
+		gpg --homedir "${KEYS}" --import "${ADD}"
+		;;
+
+	list)
+		gpg --homedir "${KEYS}" --list-keys
+		;;
+
+	remove)
+		gpg --homedir "${KEYS}" --delete-keys "${REMOVE}"
+		;;
+esac
+
+# Post hooks
+for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
diff --git a/lib/container/limit b/lib/container/limit
new file mode 100755
index 0000000..b1ec170
--- /dev/null
+++ b/lib/container/limit
@@ -0,0 +1,208 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2019 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 <http://www.gnu.org/licenses/>.
+
+set -e
+
+PROJECT="open-infrastructure"
+PROGRAM="container"
+COMMAND="$(basename ${0})"
+
+HOOKS="/etc/${PROJECT}/${PROGRAM}/hooks"
+MACHINES="/var/lib/machines"
+
+Parameters ()
+{
+	GETOPT_LONGOPTIONS="name:,blockio-device-weight:,blockio-read-bandwidth:,blockio-weight:,blockio-write-bandwidth:,cpu-quota:,cpu-shares:,memory-limit:,tasks-max:,"
+	GETOPT_OPTIONS="n:b:c:m:t:,"
+
+	PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${COMMAND} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"
+
+	if [ "${?}" != "0" ]
+	then
+		echo "'${COMMAND}': getopt exit" >&2
+		exit 1
+	fi
+
+	eval set -- "${PARAMETERS}"
+
+	while true
+	do
+		case "${1}" in
+			-n|--name)
+				NAME="${2}"
+				shift 2
+				;;
+
+			-c|--cpu-quota)
+				CPU_QUOTA="${2}"
+				shift 2
+				;;
+
+			--cpu-shares)
+				CPU_SHARES="${2}"
+				shift 2
+				;;
+
+			-m|--memory-limit)
+				MEMORY_LIMIT="${2}"
+				shift 2
+				;;
+
+			-t|--tasks-max)
+				TASKS_MAX="${2}"
+				shift 2
+				;;
+
+			--blockio-device-weight)
+				BLOCK_IO_DEVICE_WEIGHT="${2}"
+				shift 2
+				;;
+
+			--blockio-read-bandwidth)
+				BLOCK_IO_READ_BANDWIDTH="${2}"
+				shift 2
+				;;
+
+			-b|--blockio-weight)
+				BLOCK_IO_WEIGHT="${2}"
+				shift 2
+				;;
+
+			--blockio-write-bandwidth)
+				BLOCK_IO_WRITE_BANDWIDTH="${2}"
+				shift 2
+				;;
+
+			--)
+				shift 1
+				break
+				;;
+
+			*)
+				echo "'${COMMAND}': getopt error" >&2
+				exit 1
+				;;
+		esac
+	done
+}
+
+Usage ()
+{
+	echo "Usage: ${PROGRAM} ${COMMAND} -n|--name NAME [--blockio-device-weight \"DEVICE WEIGHT\"] [--blockio-read-bandwidth \"DEVICE BYTES\"] [-b|--blockio-weight WEIGHT] [--blockio-write-bandwidth \"DEVICE BYTES\"] [-c|--cpu-quota QUOTA] [--cpu-shares SHARES] [-m|--memory-limit BYTES] [-t|--tasks-max NUMBER]" >&2
+	exit 1
+}
+
+Parameters "${@}"
+
+if [ -z "${NAME}" ]
+then
+	Usage
+fi
+
+if [ ! -e "${MACHINES}/${NAME}" ]
+then
+	echo "'${NAME}': no such container" >&2
+	exit 1
+fi
+
+STATE="$(machinectl show ${NAME} 2>&1 | awk -F= '/^State=/ { print $2 }')"
+
+case "${STATE}" in
+	running)
+		;;
+
+	*)
+		echo "'${NAME}': container is not running" >&2
+		exit 1
+		;;
+esac
+
+if [ -n "${BLOCK_IO_DEVICE_WEIGHT}" ]
+then
+	BLOCK_IO_DEVICE_WEIGHT="BlockIODeviceWeight=${BLOCK_IO_DEVICE_WEIGHT}"
+	SET_PROPERTY="true"
+fi
+
+if [ -n "${BLOCK_IO_READ_BANDWIDTH}" ]
+then
+	BLOCK_IO_READ_BANDWIDTH="BlockIOReadBandwidth=${BLOCK_IO_READ_BANDWIDTH}"
+	SET_PROPERTY="true"
+fi
+
+if [ -n "${BLOCK_IO_WEIGHT}" ]
+then
+	BLOCK_IO_WEIGHT="BlockIOWeight=${BLOCK_IO_WEIGHT}"
+	SET_PROPERTY="true"
+fi
+
+if [ -n "${BLOCK_IO_WRITE_BANDWIDTH}" ]
+then
+	BLOCK_IO_WRITE_BANDWIDTH="BlockIOReadBandwidth=${BLOCK_IO_WRITE_BANDWIDTH}"
+	SET_PROPERTY="true"
+fi
+
+if [ -n "${CPU_QUOTA}" ]
+then
+	CPU_QUOTA="CPUQuota=${CPU_QUOTA}"
+	SET_PROPERTY="true"
+fi
+
+if [ -n "${CPU_SHARES}" ]
+then
+	CPU_SHARES="CPUShares=${CPU_SHARES}"
+	SET_PROPERTY="true"
+fi
+
+if [ -n "${MEMORY_LIMIT}" ]
+then
+	MEMORY_LIMIT="MemoryLimit=${MEMORY_LIMIT}"
+	SET_PROPERTY="true"
+fi
+
+if [ -n "${TASKS_MAX}" ]
+then
+	TASKS_MAX="TasksMax=${TASKS_MAX}"
+	SET_PROPERTY="true"
+fi
+
+if [ "${SET_PROPERTY}" != "true" ]
+then
+	Usage
+fi
+
+# Pre hooks
+for FILE in "${HOOKS}/pre-${COMMAND}".* "${HOOKS}/${NAME}.pre-${COMMAND}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
+
+# Run
+systemctl --runtime set-property ${NAME} ${BLOCK_IO_DEVICE_WEIGHT} ${BLOCK_IO_READ_BANDWIDTH} ${BLOCK_IO_WEIGHT} ${BLOCK_IO_WRITE_BANDWIDTH} ${CPU_QUOTA} ${CPU_SHARES} ${MEMORY_LIMIT} ${TASKS_MAX}
+
+# Post hooks
+for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
diff --git a/lib/container/start b/lib/container/start
index 82f9314..d5e9059 100755
--- a/lib/container/start
+++ b/lib/container/start
@@ -398,6 +398,70 @@ EOF
 			REGISTER="--register=no"
 			;;
 	esac
+
+	BLOCK_IO_DEVICE_WEIGHT="$(awk -F= '/^BlockIODeviceWeight=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${BLOCK_IO_DEVICE_WEIGHT}" ]
+	then
+		BLOCK_IO_DEVICE_WEIGHT="BlockIODeviceWeight=${BLOCK_IO_DEVICE_WEIGHT}"
+		SET_PROPERTY="true"
+	fi
+
+	BLOCK_IO_READ_BANDWIDTH="$(awk -F= '/^BlockIOReadBandwidth=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${BLOCK_IO_READ_BANDWIDTH}" ]
+	then
+		BLOCK_IO_READ_BANDWIDTH="BlockIOReadBandwidth=${BLOCK_IO_READ_BANDWIDTH}"
+		SET_PROPERTY="true"
+	fi
+
+	BLOCK_IO_WEIGHT="$(awk -F= '/^BlockIOWeight=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${BLOCK_IO_WEIGHT}" ]
+	then
+		BLOCK_IO_WEIGHT="BlockIOWeight=${BLOCK_IO_WEIGHT}"
+		SET_PROPERTY="true"
+	fi
+
+	BLOCK_IO_WRITE_BANDWIDTH="$(awk -F= '/^BlockIOWriteBandwidth=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${BLOCK_IO_WRITE_BANDWIDTH}" ]
+	then
+		BLOCK_IO_WRITE_BANDWIDTH="BlockIOWriteBandwidth=${BLOCK_IO_WRITE_BANDWIDTH}"
+		SET_PROPERTY="true"
+	fi
+
+	CPU_QUOTA="$(awk -F= '/^CPUQuota=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${CPU_QUOTA}" ]
+	then
+		CPU_QUOTA="CPUQuota=${CPU_QUOTA}"
+		SET_PROPERTY="true"
+	fi
+
+	CPU_SHARES="$(awk -F= '/^CPUShares=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${CPU_SHARES}" ]
+	then
+		CPU_SHARES="CPUShares=${CPU_SHARES}"
+		SET_PROPERTY="true"
+	fi
+
+	MEMORY_LIMIT="$(awk -F= '/^MemoryLimit=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${MEMORY_LIMIT}" ]
+	then
+		MEMORY_LIMIT="MemoryLimit=${MEMORY_LIMIT}"
+		SET_PROPERTY="true"
+	fi
+
+	TASKS_MAX="$(awk -F= '/^TasksMax=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
+
+	if [ -n "${TASKS_MAX}" ]
+	then
+		TASKS_MAX="TasksMax=${TASKS_MAX}"
+		SET_PROPERTY="true"
+	fi
 fi
 
 case "${SYSTEMCTL}" in
@@ -408,14 +472,26 @@ case "${SYSTEMCTL}" in
 		;;
 esac
 
-# Run
-${SETARCH} systemd-nspawn --keep-unit ${BIND} ${BIND_RO} ${BOOT} ${CAPABILITY} ${DIRECTORY} ${DROP_CAPABILITY} ${MACHINE} ${NETWORK_VETH_EXTRA} ${LINK_JOURNAL} ${REGISTER}
+case "${START}" in
+	true)
+		case "${SET_PROPERTY}" in
+			true)
+				systemctl --runtime set-property ${NAME} ${BLOCK_IO_DEVICE_WEIGHT} ${BLOCK_IO_READ_BANDWIDTH} ${BLOCK_IO_WEIGHT} ${BLOCK_IO_WRITE_BANDWIDTH} ${CPU_QUOTA} ${CPU_SHARES} ${MEMORY_LIMIT} ${TASKS_MAX}
+				;;
+		esac
+		;;
+
+	*)
+		# Run
+		${SETARCH} systemd-nspawn --keep-unit ${BIND} ${BIND_RO} ${BOOT} ${CAPABILITY} ${DIRECTORY} ${DROP_CAPABILITY} ${MACHINE} ${NETWORK_VETH_EXTRA} ${LINK_JOURNAL} ${REGISTER}
 
-# Post hooks
-for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}"
-do
-	if [ -x "${FILE}" ]
-	then
-		"${FILE}"
-	fi
-done
+		# Post hooks
+		for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}"
+		do
+			if [ -x "${FILE}" ]
+			then
+				"${FILE}"
+			fi
+		done
+		;;
+esac
diff --git a/share/bash-completion/container b/share/bash-completion/container
index 0013394..e130710 100644
--- a/share/bash-completion/container
+++ b/share/bash-completion/container
@@ -98,6 +98,27 @@ _container()
 			esac
 			;;
 
+		key)
+			opts="-a --add -l --list -r --remove"
+			COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+			return 0
+
+		limit)
+			case "${prev}" in
+				-n|--name)
+					opts="$(container list -a -f shell)"
+					COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+					return 0
+					;;
+
+				*)
+					opts="-n --name --blockio-device-weight --blockio-read-bandwidth -b --blockio-weight --blockio-write-bandwidth -c --cpu-quota --cpu-shares -m --memory-limit -t --tasks-max"
+					COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+					return 0
+					;;
+			esac
+			;;
+
 		list|ls)
 			case "${prev}" in
 				-h|--host)
diff --git a/share/config/container.conf.in b/share/config/container.conf.in
index b0f35cb..ebf91b9 100644
--- a/share/config/container.conf.in
+++ b/share/config/container.conf.in
@@ -1,5 +1,6 @@
-# /etc/open-infrastructure/container/config/@NAME@.conf
+# compute-tools: @NAME@
 
+[start]
 cnt.auto=@CNT_AUTO@
 cnt.container-server=@CNT_CONTAINER_SERVER@
 cnt.network-bridge=@CNT_NETWORK_BRIDGE@
@@ -15,3 +16,13 @@ machine=@MACHINE@
 network-veth-extra=@NETWORK_VETH_EXTRA@
 private-users=@PRIVATE_USERS@
 register=@REGISTER@
+
+[limit]
+BlockIODeviceWeight=
+BlockIOReadBandwidth=
+BlockIOWeight=
+BlockIOWriteBandwidth=
+CPUQuota=
+CPUShares=
+MemoryLimit=
+TasksMax=
diff --git a/share/man/container-create-curl.1.txt b/share/man/container-create-curl.1.txt
new file mode 100644
index 0000000..40028c9
--- /dev/null
+++ b/share/man/container-create-curl.1.txt
@@ -0,0 +1,129 @@
+// Copyright (C) 2014-2019 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 <http://www.gnu.org/licenses/>.
+
+CONTAINER-CREATE-CURL(1)
+========================
+:doctype: manpage
+:man manual: Open Infrastructure
+:man source: compute-tools
+:man version: {revnumber}
+
+
+NAME
+----
+container-create-curl - Create a Debian based container by downloading a tarball over the network
+
+
+SYNOPSIS
+--------
+*container create -s curl* ['OPTIONS']
+
+
+DESCRIPTION
+-----------
+The curl container creation script uses curl(1) to download a tarball over the
+network to create a Debian based container.
+
+Depending on the tarball this script otherwise creates a pure Debian system with three modificiations:
+
+  * hostname is set (container name) in /etc/hostname
+  * systemd machine-id is generated in /etc/machine-id
+  * root password is set (user specified or 16 random characters)
+
+
+OPTIONS
+-------
+The following script options are available:
+
+*-n, --name='NAME'*::
+	Specify container name.
+
+*-a, --architecture='ARCHITECTURE'*::
+	Specify container architecture.
+
+"--clean*::
+	Remove downloaded tarball after successfull container creation.
+
+*-p, --root-password='PASSWORD'*::
+	Specify the root password, defaults to a random 16 character password.
+
+*--server='SERVER'*::
+	Specify the image server to download from, defaults to https://get.open-infrastructure.net/system/container/debian.
+
+*--setup='SETUP'*::
+	Specify the setup image name to download, defaults to the value specified through --system using the setup.tar.${COMPRESSION} suffix.
+
+*--system='SYSTEM'*::
+	Specify the system image name to download, defaults to debian-stretch-current_${ARCHITECTURE}.system.tar.${COMPRESSION} (where ${ARCHITECTURE} is the host systems architecture and ${COMPRESSION} either lz, xz, or gz depending on compressor availability on the host system).
+
+
+EXAMPLES
+--------
+*Create a Debian 9 (stretch) based container with same architecture as the host system:*::
+	sudo container create -s curl -n stretch.example.net
+
+*Create a Debian 9 (stretch) based container with different architecture as the host system:*::
+	sudo container create -s curl -n stretch-i386.example.net -- --system debian-stretch-current_i386.system.tar.xz
+
+FILES
+-----
+The following files are used:
+
+*/etc/open-infrastructure/container/config*::
+	Container configuration files.
+
+*/usr/share/open-infrastructure/container/scripts*::
+	Container creation scripts.
+
+*/usr/share/doc/compute-tools*::
+	Container documentation.
+
+*/var/lib/machines*::
+	Container directory.
+
+*/var/cache/open-infrastructure/container*::
+	Container cache directory.
+
+
+CONTAINER IMAGES
+----------------
+
+compute-tools will download tarballs from a server expecting that the images are tarballs with either gzip, lzip, xz, or no compression. See container-images.sh as an example on how to create your own container images.
+
+
+SEE ALSO
+--------
+compute-tools(7),
+container(1).
+
+
+HOMEPAGE
+--------
+More information about compute-tools and the Open Infrastructure project can be found on the homepage at https://open-infrastructure.net.
+
+
+CONTACT
+-------
+Bug reports, feature requests, help, patches, support and everything else
+are welcome on the Open Infrastructure Software Mailing List <software@lists.open-infrastructure.net>.
+
+Debian specific bugs can also be reported in the Debian Bug Tracking System at https://bugs.debian.org.
+
+
+AUTHORS
+-------
+compute-tools were written by Daniel Baumann <daniel.baumann@open-infrastructure.net> and others.
diff --git a/share/man/container-create.1.txt b/share/man/container-create.1.txt
index 5ba4637..7f1f0a9 100644
--- a/share/man/container-create.1.txt
+++ b/share/man/container-create.1.txt
@@ -72,6 +72,9 @@ SCRIPTS
 -------
 The following container scripts are available:
 
+*curl*::
+	Basic script to create Debian based container, see container-create-curl(1).
+
 *debootstrap*::
 	Basic script to create Debian based container, see container-create-debootstrap(1).
 
@@ -84,6 +87,9 @@ The following container scripts are available:
 
 EXAMPLES
 --------
+*Create example.net container using curl script:*::
+	sudo container create -n example.net -s curl
+
 *Create example.net container using debootstrap script:*::
 	sudo container create -n example.net -s debootstrap
 
diff --git a/share/man/container-key.1.txt b/share/man/container-key.1.txt
new file mode 100644
index 0000000..7e7f376
--- /dev/null
+++ b/share/man/container-key.1.txt
@@ -0,0 +1,86 @@
+// Copyright (C) 2014-2019 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 <http://www.gnu.org/licenses/>.
+
+CONTAINER-KEY(1)
+================
+:doctype: manpage
+:man manual: Open Infrastructure
+:man source: compute-tools
+:man version: {revnumber}
+
+
+NAME
+----
+container-key - Manage GnuPG keyring for container operations
+
+
+SYNOPSIS
+--------
+*container key* ['OPTIONS']
+
+
+DESCRIPTION
+-----------
+The container key manages the GnuPG keyring for container operations.
+
+
+OPTIONS
+-------
+The following container options are available:
+
+*-a, --add='KEY'*::
+	Add a key to the keyring.
+
+*-l, --list'*::
+	List keys in the keyring.
+
+*-r, --remove='KEY'*::
+	Remove a key from the keyring.
+
+
+EXAMPLES
+--------
+*Add a key to the keyring:*::
+	gpg --keyserver hkps://hkps.pool.sks-keyservers.net --recv 0x1E9B3AED2D9FA8F6
+	gpg --armor --export 0x1E9B3AED2D9FA8F6 | sudo container key --add -
+
+*Remove a key from the keyring:*::
+	sudo container key --remove 0x1E9B3AED2D9FA8F6
+
+
+SEE ALSO
+--------
+compute-tools(7),
+container(1).
+
+
+HOMEPAGE
+--------
+More information about compute-tools and the Open Infrastructure project can be found on the homepage at https://open-infrastructure.net.
+
+
+CONTACT
+-------
+Bug reports, feature requests, help, patches, support and everything else
+are welcome on the Open Infrastructure Software Mailing List <software@lists.open-infrastructure.net>.
+
+Debian specific bugs can also be reported in the Debian Bug Tracking System at https://bugs.debian.org.
+
+
+AUTHORS
+-------
+compute-tools were written by Daniel Baumann <daniel.baumann@open-infrastructure.net> and others.
diff --git a/share/man/container-limit.1.txt b/share/man/container-limit.1.txt
new file mode 100644
index 0000000..62f0288
--- /dev/null
+++ b/share/man/container-limit.1.txt
@@ -0,0 +1,109 @@
+// Copyright (C) 2014-2019 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 <http://www.gnu.org/licenses/>.
+
+CONTAINER-LIMIT(1)
+==================
+:doctype: manpage
+:man manual: Open Infrastructure
+:man source: compute-tools
+:man version: {revnumber}
+
+
+NAME
+----
+container-limit - Limit ressources of a container
+
+
+SYNOPSIS
+--------
+*container limit* ['OPTIONS']
+
+
+DESCRIPTION
+-----------
+The container limit command limits ressources available to a container at runtime.
+
+
+OPTIONS
+-------
+The following container options are available:
+
+*-n, --name='NAME'*::
+	Specify container name.
+
+*--blockio-device-weight='DEVICE WEIGHT'*::
+	Specify device specific blockio weight, see systemd.resource-control(5).
+
+*--blockio-read-bandwidth='DEVICE BYTES'*::
+	Specify device specific blockio read bandwidth, see systemd.resource-control(5).
+
+*-b, --blockio-weight='WEIGHT'*::
+	Specify general blockio weight, see systemd.resource-control(5).
+
+*--blockio-write-bandwidth='DEVICE BYTES'*::
+	Specify device specific blockio write bandwidth, see systemd.resource-control(5).
+
+*-c, --cpu-quota='QUOTA'*::
+	Specify CPU quota, see systemd.resource-control(5).
+
+*--cpu-shares='SHARES'*::
+	Specify CPU shares, see systemd.resource-control(5).
+
+*-m, --memory-limit='BYTES'*::
+	Specify memory limit, see systemd.resource-control(5).
+
+*-t, --tasks-max='NUMBER'*::
+	Specify tasks max, see systemd.resource-control(5).
+
+
+EXAMPLES
+--------
+*Set blockio weight for the example.net container:*::
+	sudo container limit -n example.net --blockio-weight 100
+
+*Set CPU quota for the example.net container:*::
+	sudo container limit -n example.net --cpu-quota 10%
+
+*Set memory limit for the example.net container to 1GB:*::
+	sudo container limit -n example.net --memory-limit 1G
+
+*Set tasks max for the example.net container to 100:*::
+	sudo container limit -n example.net --tasks-max 100
+
+
+SEE ALSO
+--------
+compute-tools(7),
+container(1).
+
+
+HOMEPAGE
+--------
+More information about compute-tools and the Open Infrastructure project can be found on the homepage at https://open-infrastructure.net.
+
+
+CONTACT
+-------
+Bug reports, feature requests, help, patches, support and everything else
+are welcome on the Open Infrastructure Software Mailing List <software@lists.open-infrastructure.net>.
+
+Debian specific bugs can also be reported in the Debian Bug Tracking System at https://bugs.debian.org.
+
+
+AUTHORS
+-------
+compute-tools were written by Daniel Baumann <daniel.baumann@open-infrastructure.net> and others.
diff --git a/share/man/container.1.txt b/share/man/container.1.txt
index 224d6cc..aba9141 100644
--- a/share/man/container.1.txt
+++ b/share/man/container.1.txt
@@ -75,6 +75,12 @@ The following container commands are available:
 *enter*::
 	Enter a container namespace, see container-enter(1).
 
+*key*::
+	Manage GnuPG keyring for container operations, see container-key(1).
+
+*limit*::
+	Limit ressources of a container, see container-limit(1).
+
 *list*::
 	List container on the system, see container-list(1).
 
diff --git a/share/scripts/curl b/share/scripts/curl
new file mode 100755
index 0000000..6b8db26
--- /dev/null
+++ b/share/scripts/curl
@@ -0,0 +1,490 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2019 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 <http://www.gnu.org/licenses/>.
+
+set -e
+
+PROJECT="open-infrastructure"
+SOFTWARE="compute-tools"
+PROGRAM="container"
+SCRIPT="${0}"
+
+HOOKS="/etc/${PROJECT}/${PROGRAM}/hooks"
+KEYS="/etc/${PROJECT}/${PROGRAM}/keys"
+MACHINES="/var/lib/machines"
+CACHE="/var/cache/${PROJECT}/${PROGRAM}/system"
+
+Parameters ()
+{
+	GETOPT_LONGOPTIONS="bind:,bind-ro:,script:,name:,architecture:,clean,password:,server:,setup:,system:,"
+	GETOPT_OPTIONS="b:,s:,n:,a:,p:"
+
+	PARAMETERS="$(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="${2}"
+				shift 2
+				;;
+
+			--clean)
+				CLEAN="true"
+				shift 1
+				;;
+
+			-p|--password)
+				PASSWORD="${2}"
+				shift 2
+				;;
+
+			--server)
+				SERVER="${2}"
+				shift 2
+				;;
+
+			--setup)
+				SETUP="${2}"
+				shift 2
+				;;
+
+			--system)
+				SYSTEM="${2}"
+				shift 2
+				;;
+
+			--)
+				shift 1
+				break
+				;;
+
+			*)
+				echo "'${SCRIPT}': getopt error" >&2
+				exit 1
+				;;
+		esac
+	done
+}
+
+Usage ()
+{
+	echo "Usage: container create -n|--name NAME -s|--script ${SCRIPT} -- [--clean] [-p|--password PASSWORD] [--server SERVER] [--setup SETUP] [--system SYSTEM]" >&2
+	exit 1
+}
+
+Parameters "${@}"
+
+if [ -z "${NAME}" ]
+then
+	Usage
+fi
+
+if [ -e "${MACHINES}/${NAME}" ]
+then
+	echo "'${NAME}': container already exists" >&2
+	exit 1
+fi
+
+if [ ! -x /usr/bin/curl ]
+then
+	echo "'${NAME}': /usr/bin/curl - no such file." >&2
+	exit 1
+fi
+
+if [ "$(id -u)" -ne 0 ]
+then
+	echo "'${NAME}': need root privileges" >&2
+	exit 1
+fi
+
+COMPRESSIONS=""
+
+if [ -x /usr/bin/lzip ]
+then
+	COMPRESSIONS="${COMPRESSIONS} lz"
+fi
+
+if [ -x /usr/bin/xz ]
+then
+	COMPRESSIONS="${COMPRESSIONS} xz"
+fi
+
+if [ -x /bin/gzip ]
+then
+	COMPRESSIONS="${COMPRESSIONS} gz"
+fi
+
+if [ -z "${COMPRESSIONS}" ]
+then
+	echo "'${NAME}': no supported compressor available (lz, xz, gz)."
+	exit 1
+fi
+
+SERVER="${SERVER:-https://get.open-infrastructure.net/system/container/debian}"
+PASSWORD="${PASSWORD:-$(dd if=/dev/urandom bs=12 count=1 2> /dev/null | base64)}"
+
+VERSION="$(container version)"
+
+export SERVER
+
+Debconf ()
+{
+	# Configure local debconf
+	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
+}
+
+# Pre hooks
+for FILE in "${HOOKS}/pre-${SCRIPT}".* "${HOOKS}/${NAME}.pre-${SCRIPT}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
+
+# Run
+
+# FIXME: default server via configuration file
+
+CURL_OPTIONS=""
+
+if curl -V | grep -qs http2
+then
+	CURL_OPTIONS="${CURL_OPTIONS} --http2"
+fi
+
+if [ -z "${SYSTEM}" ]
+then
+	# Downloading container list
+	if curl --fail --head --output /dev/null --silent "${SERVER}/container-list.txt"
+	then
+		mkdir -p "/tmp/${SOFTWARE}"
+		DEBCONF_TMPDIR="$(mktemp -d -p "/tmp/${SOFTWARE}" -t $(basename ${0}).XXXX)"
+		export DEBCONF_TMPDIR
+
+		if [ -z "${ARCHITECTURE}" ]
+		then
+			case "$(dpkg --print-architecture)" in
+				amd64)
+					GREP_PATTERN="(amd64|i386)"
+					;;
+			esac
+		fi
+
+		GREP_PATTERN="${GREP_PATTERN:-${ARCHITECTURE}}"
+
+		echo "Downloading $(echo ${SERVER} | awk -F/ '{ print $3 }') container list"
+		curl	--fail --location --progress-bar --user-agent ${SOFTWARE}/${VERSION} ${CURL_OPTIONS} \
+			"${SERVER}/container-list.txt" | grep -E "${GREP_PATTERN}" > "${DEBCONF_TMPDIR}/container-list.txt"
+
+		umask 0022
+
+		Debconf
+
+		# Run debconf parts
+		for DEBCONF_SCRIPT in /usr/share/${PROJECT}/${PROGRAM}/scripts/curl.d/*
+		do
+			if [ -x "${DEBCONF_SCRIPT}" ]
+			then
+				"${DEBCONF_SCRIPT}"
+			fi
+		done
+
+		# Read-in configuration from debconf
+		. "${DEBCONF_TMPDIR}/debconf.default"
+
+		# Remove debconf temporary files
+		rm --preserve-root --one-file-system -rf "${DEBCONF_TMPDIR}"
+		rmdir --ignore-fail-on-non-empty "/tmp/${SOFTWARE}" 2>&1 || true
+	fi
+fi
+
+for COMPRESSION in ${COMPRESSIONS}
+do
+	if curl --fail --head --output /dev/null --silent "${SERVER}/${SYSTEM}.${COMPRESSION}"
+	then
+		SYSTEM="${SYSTEM}.${COMPRESSION}"
+		break
+	fi
+done
+
+# Downloading container files
+mkdir -p "${CACHE}"
+
+SETUP="${SETUP:-$(echo ${SYSTEM} | sed -e 's|.system.tar.|.setup.tar.|')}"
+
+for FILE in	"${SYSTEM}" "${SYSTEM}.gpg" "${SYSTEM}.sha512" \
+		"${SETUP}" "${SETUP}.gpg" "${SETUP}.sha512"
+do
+	if curl --fail --head --output /dev/null --silent "${SERVER}/${FILE}"
+	then
+		case "${FILE}" in
+			*.sha512)
+				if [ -e "${CACHE}/$(basename ${FILE} .sha512).gpg" ]
+				then
+					continue
+				fi
+				;;
+		esac
+
+		if [ -e "${CACHE}/${FILE}" ]
+		then
+			CURL_TIME_COND="--time-cond ${CACHE}/${FILE}"
+		else
+			CURL_TIME_COND=""
+		fi
+
+		echo "Downloading ${FILE}"
+		curl	--fail --location --progress-bar --user-agent ${SOFTWARE}/${VERSION} ${CURL_OPTIONS} ${CURL_TIME_COND} \
+			"${SERVER}/${FILE}" -o "${CACHE}/${FILE}"
+	fi
+done
+
+cd "${CACHE}"
+
+for FILE in "${SYSTEM}" "${SETUP}"
+do
+	if [ ! -e "${FILE}" ]
+	then
+		continue
+	fi
+
+	if [ -e "${FILE}.gpg" ]
+	then
+		echo -n "Verifying ${FILE}:"
+
+		set +e
+		gpg --homedir "${KEYS}" --verify "${FILE}.gpg" "${FILE}" > /dev/null 2>&1
+		GNUPG="${?}"
+		set -e
+
+		case "${GNUPG}" in
+			0)
+				echo " gpg ok."
+				continue
+				;;
+
+			*)
+				echo " gpg failed."
+				exit 1
+				;;
+		esac
+	elif [ -e "${FILE}.sha512" ]
+	then
+		echo -n "Verifying ${FILE}:"
+
+		set +e
+		sha512sum --check "${FILE}.sha512" --status
+		SHA512SUM="${?}"
+		set -e
+
+		case "${SHA512SUM}" in
+			0)
+				echo " sha512 ok."
+				;;
+
+			*)
+				echo " sha512 failed."
+				exit 1
+				;;
+		esac
+	fi
+done
+
+cd "${OLDPWD}"
+
+case "${SYSTEM}" in
+	*.gz)
+		TAR_OPTIONS="--gzip"
+
+		if [ ! -e /bin/gzip ]
+		then
+			echo -en "\n"
+			echo "'${NAME}': /bin/lzip - no such file." >&2
+			exit 1
+		fi
+		;;
+
+	*.lz)
+		TAR_OPTIONS="--lzip"
+
+		if [ ! -e /usr/bin/lzip ]
+		then
+			echo -en "\n"
+			echo "'${NAME}': /usr/bin/lzip - no such file." >&2
+			exit 1
+		fi
+		;;
+
+	*.xz)
+		TAR_OPTIONS="--xz"
+
+		if [ ! -e /usr/bin/xz ]
+		then
+			echo -en "\n"
+			echo "'${NAME}': /usr/bin/xz - no such file." >&2
+			exit 1
+		fi
+		;;
+
+	*)
+		TAR_OPTIONS=""
+		;;
+esac
+
+for FILE in "${SYSTEM}" "${SETUP}"
+do
+	if [ ! -e "${CACHE}/${FILE}" ]
+	then
+		continue
+	fi
+
+	case "${FILE}" in
+		*.system.tar.*)
+			DIRECTORY="${MACHINES}/${NAME}"
+			;;
+
+		*.setup.tar.*)
+			DIRECTORY="${MACHINES}/${NAME}/setup"
+			;;
+	esac
+
+	mkdir -p "${DIRECTORY}"
+
+	if [ -e /usr/bin/pv ]
+	then
+		echo "Unpacking ${FILE}"
+		pv --format '%p' --width 77 "${CACHE}/${FILE}" | tar xf - ${TAR_OPTIONS} -C "${DIRECTORY}" --strip 1
+	else
+		echo -n "Unpacking ${FILE}:"
+		tar xf "${CACHE}/${FILE}" ${TAR_OPTIONS} -C "${DIRECTORY}" --strip 1
+		echo " ok."
+	fi
+done
+
+if [ -x "${MACHINES}/${NAME}/setup/container" ]
+then
+	chroot "${MACHINES}/${NAME}" /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="${TERM}" \
+		DEBIAN_FRONTEND="dialog" DEBIAN_PRIORITY="low" \
+		DEBCONF_NONINTERACTIVE_SEEN="true" DEBCONF_NOWARNINGS="true" \
+		NAME="${NAME}" \
+		/setup/container
+
+	rm -rf "${MACHINES}/${NAME}/setup"
+fi
+
+# Creating machine-id
+chroot "${MACHINES}/${NAME}" systemd-machine-id-setup > /dev/null 2>&1
+
+# Setting hostname
+echo "${NAME}" > "${MACHINES}/${NAME}/etc/hostname"
+
+# Copying resolv.conf
+cp -L /etc/resolv.conf "${MACHINES}/${NAME}/etc/resolv.conf"
+
+# Setting root password
+echo root:${PASSWORD} | chroot "${MACHINES}/${NAME}" chpasswd
+echo "${NAME}: root password set to '${PASSWORD}'."
+
+# Remove cache
+case "${CLEAN}" in
+	true)
+		rm -f "${CACHE}/${SYSTEM}" "${CACHE}/${SYSTEM}.sha512"
+		rm -f "${CACHE}/${SETUP}" "${CACHE}/${SETUP}.sha512"
+		;;
+esac
+
+# Post hooks
+for FILE in "${HOOKS}/post-${SCRIPT}".* "${HOOKS}/${NAME}.post-${SCRIPT}"
+do
+	if [ -x "${FILE}" ]
+	then
+		"${FILE}"
+	fi
+done
diff --git a/share/scripts/curl.d/0001-debconf b/share/scripts/curl.d/0001-debconf
new file mode 100755
index 0000000..3f98f74
--- /dev/null
+++ b/share/scripts/curl.d/0001-debconf
@@ -0,0 +1,54 @@
+#!/bin/sh
+
+# Copyright (C) 2014-2019 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 <http://www.gnu.org/licenses/>.
+
+set -e
+
+DEBCONF_NOWARNINGS="true"
+export DEBCONF_NOWARNINGS
+
+. /usr/share/debconf/confmodule
+
+System ()
+{
+	TITLE="$(echo ${SERVER} | awk -F/ '{ print $3 }')"
+
+	SYSTEMS="$(for SYSTEM in $(cat ${DEBCONF_TMPDIR}/container-list.txt | cut -d\| -f2 | sed -e 's| |#|g'); do echo -n "$(echo ${SYSTEM} | sed -e 's|#| |g'), "; done | sed -e 's|, $||')"
+	SYSTEMS_C="$(for SYSTEM_C in $(cat ${DEBCONF_TMPDIR}/container-list.txt | cut -d\| -f1); do echo -n "${SYSTEM_C}, "; done | sed -e 's|, $||')"
+
+	db_subst cnt-curl/title TITLE "${TITLE}"
+
+	db_subst cnt-curl/system CHOICES "${SYSTEMS}"
+	db_subst cnt-curl/system CHOICES_C "${SYSTEMS_C}"
+
+	db_fset cnt-curl/system seen false
+
+	db_settitle cnt-curl/title
+	db_input high cnt-curl/system || true
+	db_go
+
+	db_get cnt-curl/system
+	SYSTEM="${RET}" # select
+
+	echo "SYSTEM=\"${SYSTEM}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
+	export SYSTEM
+}
+
+System
+
+db_stop
diff --git a/share/scripts/curl.d/0001-debconf.templates b/share/scripts/curl.d/0001-debconf.templates
new file mode 100644
index 0000000..c87e47e
--- /dev/null
+++ b/share/scripts/curl.d/0001-debconf.templates
@@ -0,0 +1,11 @@
+Template: cnt-curl/title
+Type: title
+Description: ${TITLE}
+
+Template: cnt-curl/system
+Type: select
+Default:
+Choices-C: ${CHOICES_C}
+Choices: ${CHOICES}
+Description: Container list:
+ Select the system to use for creating the container.