Test Gabriel's xvfb

Author: flekschas

.github/workflows/build.yml

@@ -15,11 +15,17 @@ jobs:
         node-version: [16.x]
 
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node-version }}
-      - run: npm ci
-      - run: npm run build --if-present
-      - run: xvfb-run --auto-servernum npm test
+      - name: Install regl-scatterplot
+        run: npm ci
+      - name: Build regl-scatterplot
+        run: npm run build --if-present
+      - name: Run tests
+        uses: GabrielBB/xvfb-action@v1
+        with:
+          run: npm test