# Build the manager binary
FROM --platform=$BUILDPLATFORM golang:1.25.2 AS gobuilder
ARG TARGETOS
ARG TARGETARCH

WORKDIR /workspace
# Copy the Go Modules manifests
COPY ../go.mod go.mod
COPY ../go.sum go.sum
# cache deps before building and copying source so that we don't need to re-download as much
# and so that source changes don't invalidate our downloaded layer
RUN go mod download

# Copy the go source
COPY ../cmd/manager/main.go cmd/manager/main.go
COPY ../api/ api/
COPY ../internal/ internal/

ENV GOCACHE=/root/.cache/go-build
ENV GOMODCACHE=/go/pkg/mod

# Build
# the GOARCH has not a default value to allow the binary be built according to the host where the command
# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache/go-build \
    CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/manager/main.go

# Use a minimal base image to package the manager binary
# Refer to https://www.redhat.com/en/blog/introduction-ubi-micro for more details
FROM registry.access.redhat.com/ubi9/ubi-micro

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

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

WORKDIR /
COPY --from=gobuilder /workspace/manager .
USER 65532:65532

ENTRYPOINT ["/manager"]