Dockerfile.controller

ARG GO_IMAGE_BASE_TAG=1.25
FROM --platform=$BUILDPLATFORM golang:${GO_IMAGE_BASE_TAG} AS builder

ARG TARGETARCH

RUN apt update && apt install -y jq

WORKDIR /go/src/app
COPY go.mod .
COPY go.sum .
RUN --mount=type=cache,target=/go/pkg/mod \
    go mod download
COPY . .

# Build statically linked binary
ENV CGO_ENABLED=0
RUN --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build \
    make -B build-controller GOARCH=$TARGETARCH

# Use scratch for minimal image size
FROM scratch

LABEL \
  org.opencontainers.image.title="Skupper Controller" \
  org.opencontainers.image.description="Kubernetes controller for operating skupper networks"

WORKDIR /app

# Copy the statically linked binary
COPY --from=builder /go/src/app/controller .

# Use numeric user ID (no need to create user in scratch)
USER 10000

CMD ["/app/controller"]