Merge pull request docker-archive#1014 from chris-crone/containerize-go-mod-tidy

Containerize go mod tidy

Author: chris-crone

Dockerfile

@@ -95,7 +95,7 @@ COPY --from=make-cli /out/* .
 FROM scratch AS cross
 COPY --from=make-cross /out/* .
 
-FROM base as test
+FROM base AS test
 ENV CGO_ENABLED=0
 ARG BUILD_TAGS
 ARG GIT_TAG
@@ -106,11 +106,20 @@ RUN --mount=target=. \
     GIT_TAG=${GIT_TAG} \
     make -f builder.Makefile test
 
-FROM base as check-license-headers
+FROM base AS check-license-headers
 RUN go get -u github.com/kunalkushwaha/ltag
 RUN --mount=target=. \
     make -f builder.Makefile check-license-headers
 
-FROM base as check-go-mod
+FROM base AS make-go-mod-tidy
+COPY . .
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod tidy
+
+FROM scratch AS go-mod-tidy
+COPY --from=make-go-mod-tidy /compose-cli/go.mod .
+COPY --from=make-go-mod-tidy /compose-cli/go.sum .
+
+FROM base AS check-go-mod
 COPY . .
 RUN make -f builder.Makefile check-go-mod

Makefile

@@ -92,6 +92,9 @@ moby-cli-link: ## Create com.docker.cli symlink if does not already exist
 validate-headers: ## Check license header for all files
 	@docker build . --target check-license-headers
 
+go-mod-tidy: ## Run go mod tidy in a container and output resulting go.mod and go.sum
+	@docker build . --target go-mod-tidy --output .
+
 validate-go-mod: ## Validate go.mod and go.sum are up-to-date
 	@docker build . --target check-go-mod
 
@@ -128,4 +131,4 @@ help: ## Show help
 
 FORCE:
 
-.PHONY: all validate protos cli e2e-local cross test cache-clear lint check-dependencies serve classic-link help clean-aci-e2e
+.PHONY: all validate protos cli e2e-local cross test cache-clear lint check-dependencies serve classic-link help clean-aci-e2e go-mod-tidy