chore: build on push

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: build
+on: push
+
+jobs:
+  build:
+    timeout-minutes: 10
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [16.x]
+
+    steps:
+    - name: Git checkout
+      uses: actions/checkout@master
+
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v2.5.0
+      with:
+        node-version: ${{ matrix.node-version }}
+
+    - run: npm ci
+
+    - name: Build
+      run: npm run docs:build