helm-external-secrets/Dockerfile.ubi

FROM registry.access.redhat.com/ubi8/ubi as minimal-ubi

ARG TARGETOS
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/ \
  && strip --strip-unneeded /image/usr/lib64/*[0-9].so

# 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 all required files + rpm database so the image is scannable
COPY --from=minimal-ubi /image/ /
USER 65534
ARG TARGETOS
ARG TARGETARCH
COPY bin/external-secrets-${TARGETOS}-${TARGETARCH} /bin/external-secrets
ENTRYPOINT ["/bin/external-secrets"]