Dockerfile

ARG base_image=cgr.dev/chainguard/wolfi-base
ARG builder_image=concourse/golang-builder

ARG BUILDPLATFORM
FROM --platform=${BUILDPLATFORM} ${builder_image} AS builder

ARG TARGETOS
ARG TARGETARCH
ENV GOOS=$TARGETOS
ENV GOARCH=$TARGETARCH

COPY . /src
WORKDIR /src
ENV CGO_ENABLED=0
RUN go mod download
RUN go build -o /assets/out ./cmd/out
RUN go build -o /assets/in ./cmd/in
RUN go build -o /assets/check ./cmd/check
RUN set -e; for pkg in $(go list ./...); do \
		go test -o "/tests/$(basename $pkg).test" -c $pkg; \
	done

FROM ${base_image} AS resource
COPY --from=builder /assets /opt/resource

FROM resource AS tests
COPY --from=builder /tests /tests
RUN set -e; for test in /tests/*.test; do \
		$test; \
	done

FROM resource