Dockerfile

FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.26@sha256:595c7847cff97c9a9e76f015083c481d26078f961c9c8dca3923132f51fe12f1 AS build

ARG TARGETPLATFORM
ARG BUILDPLATFORM
ARG TARGETOS
ARG TARGETARCH

WORKDIR /workspace
ENV GO111MODULE=on

COPY *.go go.mod *.sum ./

# Download
RUN go mod download

# Bulild
COPY cmd ./cmd
COPY internal ./internal

RUN CGO_ENABLED=0 CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH}  go build -o app -ldflags '-w -extldflags "-static"' ./cmd

#Test
RUN  CCGO_ENABLED=0 go test -v ./...

# Use distroless as minimal base image to package the manager binary
# Refer to https://github.com/GoogleContainerTools/distroless for more details
# debug tag adds a shell (not recommended for prod)
FROM --platform=${BUILDPLATFORM} gcr.io/distroless/static:nonroot@sha256:e3f945647ffb95b5839c07038d64f9811adf17308b9121d8a2b87b6a22a80a39
WORKDIR /
COPY --from=build /workspace/app /app/app
USER nonroot:nonroot

ENTRYPOINT ["/app/app"]

ARG IMAGE_SOURCE
LABEL org.opencontainers.image.source=$IMAGE_SOURCE