# Sidecar
# The container needs to provides and build two components:
# * barman-cloud
# * instance plugin
# Both components are built before going into a distroless container

# Build barman-cloud
# pip will build everything inside /usr/ since this is the case
# we should build and then copy every file into a destination that will
# then copy into the distroless container
FROM python:3.12.7-slim AS pythonbuilder
RUN apt-get update && \
    apt-get install -y postgresql-common build-essential && \
    /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh -y && \
    apt-get install -y libpq-dev && \
    pip install barman[azure,cloud,google,snappy]==3.11.1 setuptools
# Prepare a new /usr/ directory with the files we'll need in the final image
RUN mkdir /new-usr/ && \
    cp -r --parents /usr/local/lib/ /usr/lib/*-linux-gnu/ \
    /new-usr/

# Build instance
# This step builds a simple instance app that will manage and handle
# the barman-cloud commands inside the sidecar
FROM --platform=$BUILDPLATFORM golang:1.23.1 AS gobuilder
ENV CGO_ENABLED=0
COPY .. /src
ARG TARGETOS
ARG TARGETARCH
RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache/go-build \
    GOOS=$TARGETOS GOARCH=$TARGETARCH go build -C /src -o /build/instance /src/cmd/instance/main.go

# Joint process
# Now we put everything that was build from the origin into our
# distroless container
FROM gcr.io/distroless/python3:debug

ENV SUMMARY="CloudNativePG Barman plugin" \
    DESCRIPTION="Container image that provides the barman-cloud sidecar" \

LABEL summary="$SUMMARY" \
      description="$DESCRIPTION" \
      io.k8s.display-name="$SUMMARY" \
      io.k8s.description="$DESCRIPTION" \
      name="CloudNativePG Barman plugin sidecar" \
      vendor="CloudNativePG Contributors" \
      url="https://cloudnative-pg.io/" \
      version="" \
      release="1"

COPY --from=pythonbuilder /new-usr/* /usr/
COPY --from=gobuilder /build/instance /usr/local/bin/instance
USER 26:26
ENTRYPOINT ["/usr/local/bin/instance"]