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Reloader/Dockerfile.ubi
faizanahmad055 b0ca635e49 Add file filtering in UBI docker image
Signed-off-by: faizanahmad055 <faizan.ahmad55@outlook.com>
2026-01-07 09:11:48 +01:00

58 lines
2.2 KiB
Docker

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
# Filter existing files and exclude temporary entitlement files that may be removed during build
RUN set -e && \
# Filter files that actually exist (files, directories, or symlinks)
while IFS= read -r file; do \
[ -n "$file" ] && ([ -e "$file" ] || [ -L "$file" ]) && echo "$file"; \
done < /tmp/ubi-build-files-${TARGETARCH}.txt > /tmp/existing-files.txt && \
# Create tarball if we have files to archive
if [ -s /tmp/existing-files.txt ]; then \
tar -chf /tmp/files.tar \
--exclude='etc/pki/entitlement-host*' \
-T /tmp/existing-files.txt 2>&1 | grep -vE "(File removed before we read it|Cannot stat)" || true; \
# Extract only if tarball was created successfully
if [ -f /tmp/files.tar ]; then \
tar -xf /tmp/files.tar -C /image/ && \
rm -f /tmp/files.tar; \
fi; \
fi && \
# Clean up temporary file list
rm -f /tmp/existing-files.txt
# Generate a rpm database which contains all the packages that you said were needed in ubi-build-files-*.txt
RUN rpm --root /image --initdb \
&& PACKAGES=$(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"]