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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+FROM golang:1.14 as skopeo
+
+WORKDIR /go/src/
+RUN ["git", "clone", "--no-checkout", "--depth=1", "--branch=v1.1.1", "https://github.com/containers/skopeo", "."]
+RUN ["git", "checkout", "67abbb3cefbdc876447583d5ea45e76bf441eba7"]
+ENV GO111MODULE=on CGO_ENABLED=0
+RUN ["go", "build", \
+ "-mod=vendor", "-o", "out/skopeo", \
+ "-tags", "exclude_graphdriver_devicemapper exclude_graphdriver_btrfs containers_image_openpgp", \
+ # Set unixTempDirForBigFiles so skopeo will extract in a directory hidden by kaniko
+ # We create the directory below.
+ "-ldflags", " -X github.com/containers/image/v5/internal/tmpdir.unixTempDirForBigFiles=/workspace/tmp -X github.com/containers/image/v5/signature.systemDefaultPolicyPath=/kaniko/containers/policy.json -extldflags \"-static\" -w -s", \
+ "./cmd/skopeo"]
+
+FROM golang:1.14 as kaniko
+WORKDIR /go/src/
+RUN ["git", "clone", "--no-checkout", "--depth=1", "--branch=v1.0.0", "https://github.com/GoogleContainerTools/kaniko", "."]
+RUN ["git", "checkout", "146ec6a9cd6f87b4a12e8119ded575d5edca35ac"]
+RUN ["make"]
+
+# Build the `build-image` command as a static binary using musl
+# The setup is loosely based on a stripped down version of
+# https://github.com/emk/rust-musl-builder/blob/master/Dockerfile
+FROM debian:buster as build-image
+
+COPY apt.conf /etc/apt/apt.conf.d/99taskcluster
+
+RUN apt-get update && \
+ apt-get install \
+ build-essential \
+ ca-certificates \
+ curl \
+ musl-dev \
+ musl-tools \
+ && \
+ useradd rust --user-group --create-home --shell /bin/bash
+
+# Run all further code as user `rust`, and create our working directories
+# as the appropriate user.
+USER rust
+
+# Set up our path with all our binary directories, including those for the
+# musl-gcc toolchain and for our Rust toolchain.
+ENV PATH=/home/rust/.cargo/bin:$PATH
+
+# The Rust toolchain to use when building our image. Set by `hooks/build`.
+ENV TOOLCHAIN=1.42.0 \
+ TARGET=x86_64-unknown-linux-musl
+
+# Install our Rust toolchain and the `musl` target. We patch the
+# command-line we pass to the installer so that it won't attempt to
+# interact with the user or fool around with TTYs. We also set the default
+# `--target` to musl so that our users don't need to keep overriding it
+# manually.
+RUN curl https://sh.rustup.rs -sSf | \
+ sh -s -- -y \
+ --profile minimal \
+ --default-toolchain $TOOLCHAIN \
+ --target $TARGET
+
+# Expect our source code to live in /home/rust/src. We'll run the build as
+# user `rust`, which will be uid 1000, gid 1000 outside the container.
+RUN mkdir -p /home/rust/src
+WORKDIR /home/rust/src
+# Add our source code.
+ADD --chown=rust:rust build-image/ ./
+
+# --out-dir is not yet stable
+ENV RUSTC_BOOTSTRAP=1
+# Build our application.
+RUN ["cargo", "build", "--target", "x86_64-unknown-linux-musl", "--out-dir=bin", "--release", "-Zunstable-options"]
+
+FROM scratch as empty
+
+FROM scratch
+
+COPY --from=skopeo /go/src/out/skopeo /kaniko-bootstrap/skopeo
+COPY --from=kaniko /go/src/out/executor /kaniko-bootstrap/executor
+COPY --from=build-image \
+ /home/rust/src/bin/build-image \
+ /kaniko-bootstrap/build-image
+
+ADD https://mkcert.org/generate/ /kaniko-bootstrap/ssl/certs/ca-certificats.crt
+ENV SSL_CERT_DIR=/kaniko/ssl/certs
+
+ADD policy.json /kaniko-bootstrap/containers/policy.json
+
+ENV HOME /root
+ENV USER /root
+WORKDIR /workspace
+
+ENV PATH /usr/local/bin:/kaniko
+
+VOLUME /workspace
+ENTRYPOINT ["/kaniko-bootstrap/build-image"]