Add job to run the build script in CI

.github/workflows/test.yml

@@ -92,6 +92,46 @@ jobs:
       - name: Run Tests
         run: npm run test-spec
 
+  build:
+    name: Build (Node ${{ matrix.node }} / ${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+        node:
+          - 14
+
+    steps:
+      - name: Clone Repository
+        uses: actions/checkout@v2
+
+      - name: Set Node.js Version
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+
+      - name: Determine Cache Directory
+        id: npm-cache
+        run: |
+          echo "::set-output name=dir::$(npm config get cache)"
+
+      - name: Configure Job Cache
+        uses: actions/cache@v1
+        with:
+          path: ${{ steps.npm-cache.outputs.dir }}
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Run Tests
+        run: npm run build-package
+
   rendering:
     name: Rendering (Node ${{ matrix.node }} / ${{ matrix.os }})
     runs-on: ${{ matrix.os }}