Containerfile

## Downloads the extensions given the extensions.yaml
ARG IMAGE_FROM=overridden
FROM ${IMAGE_FROM} as os
RUN mkdir /os
WORKDIR /os
ADD . .
ARG OPENSHIFT_CI=0
ARG YUM_REPO_NAMES=overridden
ARG EXTENSIONS_YUM_REPO_NAMES=overridden
RUN --mount=type=secret,id=yumrepos,target=/os/secret.repo extensions/build.sh

## Creates the repo metadata for the extensions.
FROM quay.io/centos/centos:stream9 as builder
COPY --from=os /usr/share/rpm-ostree/extensions/ /usr/share/rpm-ostree/extensions/
RUN dnf install -y createrepo_c
RUN createrepo_c /usr/share/rpm-ostree/extensions/
# Generate extensions.json for meta.json.
# Use dnf repoquery to print 'name: version,' for each RPM
# sed to remove the comma from the last RPM
RUN (echo "{" && \
(dnf repoquery --repofrompath=extensions,/usr/share/rpm-ostree/extensions/ \
  --quiet --disablerepo=* --enablerepo=extensions \
  --queryformat "\"%{name}\": \"%{evr}.%{arch}\"," | \
sed "$ s/,$//") && echo "}") >> /usr/share/rpm-ostree/extensions.json

## Final container that has the extensions repo dir
FROM registry.access.redhat.com/ubi9/ubi:latest
# Add a label so the extensions image can be identified
LABEL io.openshift.os.extensions=true
# Identify the stream this extensions image is related to
ARG STREAM_CLASS
LABEL io.openshift.os.streamclass=${STREAM_CLASS}
# Copy in the extensions repo
COPY --from=builder /usr/share/rpm-ostree/extensions/ /usr/share/rpm-ostree/extensions/
# Make this the last layer, this is similar to the metalayer trick in the node
# image, but this one is specific to rpm-ostree extensions.
COPY --from=builder /usr/share/rpm-ostree/extensions.json /usr/share/rpm-ostree/extensions.json