Dockerfile

#syntax=docker/dockerfile:1.6.0

FROM --platform=${BUILDPLATFORM} golang:1.21.0@sha256:b490ae1f0ece153648dd3c5d25be59a63f966b5f9e1311245c947de4506981aa AS base
WORKDIR /src
ENV CGO_ENABLED=0
COPY go.* .
RUN --mount=type=cache,target=/go/pkg/mod \
    go mod download

FROM base AS build
ARG TARGETOS
ARG TARGETARCH
WORKDIR /go/src/github.com/nicholasdille/docker-setup
ARG version=main
ENV CGO_ENABLED=0
RUN --mount=target=. \
    --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build <<EOF
mkdir -p /out
GOOS=${TARGETOS} \
GOARCH=${TARGETARCH} \
    go build \
        -buildvcs=false \
        -ldflags "-w -s -X main.version=${version}" \
        -o /out/docker-setup \
        ./cmd/docker-setup
EOF

FROM base AS unit-test
RUN --mount=target=. \
    --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build <<EOF
mkdir -p /out
go test \
    -v \
    -coverprofile=/out/cover.out \
    ./...
EOF

FROM golangci/golangci-lint:v1.53.3 AS lint-base

FROM base AS lint
RUN --mount=target=. \
    --mount=from=lint-base,src=/usr/bin/golangci-lint,target=/usr/bin/golangci-lint \
    --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build \
    --mount=type=cache,target=/root/.cache/golangci-lint <<EOF
golangci-lint run --timeout 10m0s ./...
EOF

FROM scratch AS unit-test-coverage
COPY --from=unit-test /out/cover.out /cover.out

FROM scratch AS bin-unix
COPY --from=build /out/docker-setup /

FROM bin-unix AS bin-linux
FROM bin-unix AS bin-darwin

FROM scratch AS bin-windows
COPY --from=build /out/docker-setup /docker-setup.exe

FROM bin-${TARGETOS} as bin