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# syntax=docker/dockerfile-upstream:master
ARG GO_VERSION=1.23
ARG ALPINE_VERSION=3.20
ARG XX_VERSION=1.6.1
# xx is a helper for cross-compilation
FROM --platform=$BUILDPLATFORM tonistiigi/xx:${XX_VERSION} AS xx
FROM --platform=$BUILDPLATFORM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS base
RUN apk add git bash
COPY --from=xx / /
WORKDIR /src
ENV GOFLAGS=-mod=vendor
FROM base AS version
ARG CHANNEL
# TODO: PKG should be inferred from go modules
RUN --mount=target=. \
PKG=github.com/moby/buildkit/frontend/dockerfile/cmd/dockerfile-frontend VERSION=$(./frontend/dockerfile/cmd/dockerfile-frontend/hack/detect "$CHANNEL") REVISION=$(git rev-parse HEAD)$(if ! git diff --no-ext-diff --quiet --exit-code; then echo .m; fi) \
&& echo "-X main.Version=${VERSION} -X main.Revision=${REVISION} -X main.Package=${PKG}" | tee /tmp/.ldflags \
&& echo -n "${VERSION}" | tee /tmp/.version
FROM base AS build
RUN apk add --no-cache file
ARG BUILDTAGS=""
ARG TARGETPLATFORM
RUN --mount=target=. --mount=type=cache,target=/root/.cache \
--mount=target=/go/pkg/mod,type=cache \
--mount=source=/tmp/.ldflags,target=/tmp/.ldflags,from=version \
CGO_ENABLED=0 xx-go build -o /dockerfile-frontend -ldflags "-d $(cat /tmp/.ldflags)" -tags "$BUILDTAGS netgo static_build osusergo" ./frontend/dockerfile/cmd/dockerfile-frontend && \
xx-verify --static /dockerfile-frontend
FROM scratch AS release
LABEL moby.buildkit.frontend.network.none="true"
LABEL moby.buildkit.frontend.caps="moby.buildkit.frontend.inputs,moby.buildkit.frontend.subrequests,moby.buildkit.frontend.contexts"
COPY --from=build /dockerfile-frontend /bin/dockerfile-frontend
ENTRYPOINT ["/bin/dockerfile-frontend"]
FROM release
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