Create build.yml

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: build
+
+on:
+  pull_request:
+    branches:
+    - master
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [8.12.0]
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: npm install
+        run: npm install
+      - name: npm build
+        run: npm run-script build
+        env:
+          CI: true