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ARG BASE
FROM ${BASE} AS base
ENV LANG=C.UTF8
ARG TARGETARCH
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 gcr.io/distroless/python3-debian12:latest-${TARGETARCH} AS distroless

# Prevents internal errors found with distroless container images and Flex templates.
COPY --from=base /usr/lib/locale /usr/lib/locale

# Contains header files needed by the Python interpreter.
COPY --from=base /usr/local/include /usr/local/include

# Contains the Python interpreter executables.
COPY --from=base /usr/local/bin /usr/local/bin

# Contains the Python library dependencies.
COPY --from=base /usr/local/lib /usr/local/lib

# Python standard library modules.
COPY --from=base /usr/lib/python* /usr/lib/.

# Contains the boot entrypoint and related files such as licenses.
COPY --from=base /opt /opt

ENV PATH "$PATH:/usr/local/bin"

# Despite the ENTRYPOINT set in base image, need to reset since deriving the layer derives from a different image.
ENTRYPOINT ["/opt/apache/beam/boot"]