Build UI static files + check generation with GHAction

.github/workflows/check-generated-files.yaml

@@ -0,0 +1,25 @@
+name: check-generated-files
+on:
+  pull_request:
+    branches:    
+      - main
+
+jobs:
+  check-ui-static-files:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Generate static files for UI
+        run: make ui-static
+
+      - name: Verify Changed files
+        uses: tj-actions/verify-changed-files@v16
+        id: verify-changed-files
+
+      - name: Some files have changed
+        if: steps.verify-changed-files.outputs.files_changed == 'true'
+        run: |
+          echo "::error Changed files: ${{ steps.verify-changed-files.outputs.changed_files }} -- Please regenerate with make ui-static"
+          exit 1

Makefile

@@ -77,6 +77,10 @@ default: bin
 help: ## Show this help.
 	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {sub("\\\\n",sprintf("\n%22c"," "), $$2);printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
 
+.PHONY: ui-static
+ui-static: ## build static files for UI to be served by embedded API server
+	(cd ui && npm install && npm run build) && rm -rf pkg/apiserver-impl/ui/* && mv ui/dist/devfile-builder/* pkg/apiserver-impl/ui/
+
 .PHONY: bin
 bin: ## build the odo binary
 	go build ${BUILD_FLAGS} cmd/odo/odo.go