Dockerfile.ubi

ARG BUILDER_IMAGE
ARG BASE_IMAGE

FROM --platform=${BUILDPLATFORM} ${BUILDER_IMAGE} AS SRC

FROM ${BASE_IMAGE:-registry.access.redhat.com/ubi9/ubi:latest} AS ubi
ARG TARGETARCH


RUN dnf update -y && dnf install -y binutils
# prep target rootfs for scratch container
WORKDIR /
RUN mkdir /image && \
    ln -s usr/bin /image/bin && \
	ln -s usr/sbin /image/sbin && \
	ln -s usr/lib64 /image/lib64 && \
	ln -s usr/lib /image/lib && \
	mkdir -p /image/{usr/bin,usr/lib64,usr/lib,root,home,proc,etc,sys,var,dev}

COPY ubi-build-files-${TARGETARCH}.txt /tmp
# Copy all the required files from the base UBI image into the image directory
# As the go binary is not statically compiled this includes everything needed for CGO to work, cacerts, tzdata and RH release files
RUN tar cf /tmp/files.tar -T /tmp/ubi-build-files-${TARGETARCH}.txt && tar xf /tmp/files.tar -C /image/

# Generate a rpm database which contains all the packages that you said were needed in ubi-build-files-*.txt
RUN rpm --root /image --initdb \
  && PACKAGES=$(rpm -qf $(cat /tmp/ubi-build-files-${TARGETARCH}.txt) | grep -v "is not owned by any package" | sort -u) \
  && echo dnf install -y 'dnf-command(download)' \
  && dnf download --destdir / ${PACKAGES} \
  && rpm --root /image -ivh --justdb --nodeps `for i in ${PACKAGES}; do echo $i.rpm; done`

FROM scratch
COPY --from=ubi /image/ /
COPY --from=SRC /manager .
USER 65532:65532
# Port for metrics and probes
EXPOSE 9090

ENTRYPOINT ["/manager"]