FROM golang:1.25 AS builder
ARG TARGETOS
ARG TARGETARCH

WORKDIR /workspace
COPY go.mod go.sum ./
RUN go mod download

# .dockerignore filters the context down to Go sources and module files.
COPY . .

# The build context has no .git, so Go's automatic VCS stamp is absent here;
# the commit comes in through GIT_COMMIT instead. Declared this late so a new
# commit does not invalidate the module-download layer.
ARG GIT_COMMIT=unknown
RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH:-amd64} go build \
    -trimpath \
    -ldflags "-s -w -X gitea.home.hrajfrisbee.cz/kacerr/gatewayapi-certificates-operator/internal/version.Commit=${GIT_COMMIT}" \
    -o manager .

FROM gcr.io/distroless/static:nonroot
ARG GIT_COMMIT=unknown
LABEL org.opencontainers.image.revision="${GIT_COMMIT}"
WORKDIR /
COPY --from=builder /workspace/manager .
USER 65532:65532
ENTRYPOINT ["/manager"]