sdks/java/container/Dockerfile-distroless

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# ARG BEAM_BASE is the Beam SDK container image built using sdks/python/container/Dockerfile.
ARG BEAM_BASE

# ARG DISTROLESS_BASE is the distroless container image URL. For available distroless Java images,
#   see https://github.com/GoogleContainerTools/distroless/tree/main?tab=readme-ov-file#what-images-are-available.
#   Only Java versions 17 and 21 are supported.
ARG DISTROLESS_BASE
FROM ${BEAM_BASE} AS base
ARG TARGETARCH
ENV LANG C.UTF-8

LABEL Author="Apache Beam <dev@beam.apache.org>"

RUN if [ -z "${TARGETARCH}" ]; then echo "fatal: TARGETARCH not set; run as docker buildx build or use --build-arg=TARGETARCH=amd64|arm64" >&2; exit 1; fi

FROM ${DISTROLESS_BASE}:latest-${TARGETARCH} AS distroless

COPY --from=base /opt /opt

# Along with the LANG environment variable above, prevents internally discovered failing bugs related to Dataflow Flex
# template character encodings.
COPY --from=base /usr/lib/locale /usr/lib/locale

ENTRYPOINT ["/opt/apache/beam/boot"]