Containerfile

# Build bootc from the current git into a c9s-bootc container image.
# Use e.g. --build-arg=base=quay.io/fedora/fedora-bootc:41 to target
# Fedora instead.
#
# You can also generate an image with cloud-init and other dependencies
# with `--build-arg=tmt` which is intended for use particularly via
# https://tmt.readthedocs.io/en/stable/
ARG base=quay.io/centos-bootc/centos-bootc:stream9
FROM $base as build
# Keep this stuff before the `COPY . /build` below to ensure that the packages
# are cached, i.e. we don't invalidate the package install stage by editing the source.
COPY contrib /contrib
COPY hack/build.sh /build.sh
RUN /build.sh && rm -v /build.sh
COPY . /build
WORKDIR /build
RUN mkdir -p /build/target/dev-rootfs  # This can hold arbitrary extra content
# See https://www.reddit.com/r/rust/comments/126xeyx/exploring_the_problem_of_faster_cargo_docker/
# We aren't using the full recommendations there, just the simple bits.
RUN --mount=type=cache,target=/build/target --mount=type=cache,target=/var/roothome make test-bin-archive && mkdir -p /out && cp target/bootc.tar.zst /out

FROM $base
# We support e.g. adding cloud-init
ARG variant=
COPY hack/provision-derived.sh /tmp
RUN /tmp/provision-derived.sh "$variant" && rm -f /tmp/*.sh
# Also copy in some default install configs we use for testing
COPY hack/install-test-configs/* /usr/lib/bootc/install/
# And some test kargs
COPY hack/test-kargs /usr/lib/bootc/kargs.d/
# Inject our built code
COPY --from=build /out/bootc.tar.zst /tmp
RUN tar -C / --zstd -xvf /tmp/bootc.tar.zst && rm -vrf /tmp/*
# Also copy over arbitrary bits from the target root
COPY --from=build /build/target/dev-rootfs/ /
# Test our own linting
RUN bootc container lint --fatal-warnings