trying out nextjs-build

.github/workflows/nextjs-build.yaml

@@ -0,0 +1,37 @@
+name: Next.js Build Check
+
+on:
+  push:
+    paths:
+      - 'js/cf-webapp'
+    branches:
+      - main
+  pull_request:
+    paths:
+      - 'js/cf-webapp'
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./js/cf-webapp
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: './js/cf-webapp/package-lock.json'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Next.js app
+        run: npm run build