Add make verify

Signed-off-by: Paulo Gomes <paulo.gomes@weave.works>

.github/workflows/build.yaml

@@ -27,10 +27,5 @@ jobs:
       uses: ./.github/actions/run-tests
       env:
         GOPATH: /github/home/go
-    - name: Check if working tree is dirty
-      run: |
-        if [[ $(git diff --stat) != '' ]]; then
-          git --no-pager diff
-          echo 'run make test and commit changes'
-          exit 1
-        fi
+    - name: Verify
+      run: make verify

Makefile

@@ -254,6 +254,15 @@ endef
 update-attributions:
 	./hack/update-attributions.sh
 
+verify: update-attributions fmt vet manifests api-docs
+ifneq (, $(shell git status --porcelain --untracked-files=no))
+	@{ \
+	echo "working directory is dirty:"; \
+	git --no-pager diff; \
+	exit 1; \
+	}
+endif
+
 .PHONY: help
 help:  ## Display this help menu
 	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-20s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)