Dockerfile

# syntax=docker/dockerfile:1

FROM --platform=${BUILDPLATFORM} golang:1.19-alpine 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
ARG VERSION
ARG REVISION
RUN --mount=target=. \
    --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build \
    GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -ldflags="-X main.Version=${VERSION} -X main.BuildDate=$(date -Iseconds) -X main.Revision=${REVISION}" -o /out/scaleway-exporter .

FROM golangci/golangci-lint:v1.50-alpine 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 \
    golangci-lint run --timeout 10m0s ./...

FROM alpine AS bin-unix
COPY --from=build /out/scaleway-exporter /
CMD ["/scaleway-exporter"]

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

FROM scratch AS bin-windows
COPY --from=build /out/scaleway-exporter /scaleway-exporter.exe

FROM bin-${TARGETOS} as bin