Attempt to add a build-assets github action to validate styles and sc…

…ripts can be compiled

.github/workflows/build-assets.yml

@@ -0,0 +1,31 @@
+name: Building assets
+
+on: [push, pull_request]
+
+jobs:
+  build-assets:
+
+    strategy:
+      matrix:
+        node-version: [14.x, 15.x]
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setting up node ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Cache npm modules
+        uses: actions/cache@v2
+        with:
+          # npm cache files are stored in `~/.npm` on Linux/macOS
+          path: ~/.npm
+          key: ${{ runner.OS }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.OS }}-node-
+            ${{ runner.OS }}-
+      - run: npm ci
+        working-directory: ./public/template
+      - run: npm run release
+        working-directory: ./public/template