47 lines
1.8 KiB
Docker
47 lines
1.8 KiB
Docker
# This is a relatively minimal base image build; it's intended as a derivation
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# point.
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#
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# This container build uses nested containerization to construct
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# a target rootfs from scratch; so you must build with e.g.
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# podman build --security-opt=label=disable --cap-add=all --device /dev/fuse <...>
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# If you want to configure the input rpm-md repositories, just override this
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# container image.
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FROM quay.io/fedora/fedora:rawhide as repos
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# We use stream10 to demonstrate that we support "cross builds".
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FROM quay.io/centos/centos:stream10 as builder
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RUN <<EORUN
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set -xeuo pipefail
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# For rpm-ostree v2025.5
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curl -L -o /etc/yum.repos.d/coreos-continuous.repo https://copr.fedorainfracloud.org/coprs/g/CoreOS/continuous/repo/centos-stream-10/group_CoreOS-continuous-centos-stream-10.repo
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dnf -y install rpm-ostree selinux-policy-targeted sqlite
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EORUN
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# Copy in our source code.
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COPY . /src
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WORKDIR /src
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RUN --mount=type=bind,from=repos,src=/,dst=/repos,rw <<EORUN
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set -xeuo pipefail
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# Copy the build configuration into the builder image, as if it's the final image
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cp -a . /usr/lib/sysimage/base-image-manifest
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# And embed the rebuild script
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install -m 0755 -t /usr/libexec ./bootc-base-image-rebuild-self
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# Finally, run the build script in the same way we expect custom images to do.
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/usr/libexec/bootc-base-image-rebuild-self /repos /target-rootfs
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EORUN
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# This pulls in the rootfs generated in the previous step
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FROM scratch
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COPY --from=builder /target-rootfs/ /
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LABEL containers.bootc 1
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# This is an ad-hoc way for us to reference bootc-image-builder in
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# a way that in theory client tooling can inspect and find. Today
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# it isn't widely used.
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LABEL bootc.diskimage-builder quay.io/centos-bootc/bootc-image-builder
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# https://pagure.io/fedora-kiwi-descriptions/pull-request/52
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ENV container=oci
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# Make systemd the default
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STOPSIGNAL SIGRTMIN+3
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CMD ["/sbin/init"]
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