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FROM dhi.io/golang:1.27-dev AS build

WORKDIR /src

ENV GOWORK=off

COPY go.mod go.sum ./

COPY cmd/frontend/go.mod cmd/frontend/go.sum ./cmd/frontend/

RUN --mount=type=cache,target=/go/pkg/mod go -C cmd/frontend mod download

COPY . .

# The build stamp has to be handed down: .dockerignore excludes .git, so

# neither the linker flags nor Go's own VCS stamping can read it here. An

# unstamped build is a working frontend that calls itself "dev", which is

# what a local `docker build -t docker/sandbox-kit:3 .` should say.

ARG VERSION=""

ARG REVISION=""

RUN --mount=type=cache,target=/go/pkg/mod \

--mount=type=cache,target=/root/.cache/go-build \

CGO_ENABLED=0 go -C cmd/frontend build -ldflags "-s -w \

-X github.com/docker/sandbox-kit-spec/v3/internal/version.Version=${VERSION} \

-X github.com/docker/sandbox-kit-spec/v3/internal/version.Revision=${REVISION}" \

-o /frontend .

FROM scratch

COPY --from=build /frontend /bin/frontend

ENTRYPOINT ["/bin/frontend"]