devops: enable Linux Github actions

.github/workflows/nodejs.yml

@@ -0,0 +1,35 @@
+name: Node CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-18.04
+
+    strategy:
+      matrix:
+        node-version: [12.x]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: install required packages
+      run: |
+        sudo apt-get install libwoff1 libopus0 libwebp6 libwebpdemux2 libenchant1c2a libgudev-1.0-0 libsecret-1-0 libhyphen0 libgdk-pixbuf2.0-0
+        sudo apt-get install xvfb
+        export DISPLAY=:99.0
+        Xvfb -ac :99 -screen 0 1280x1024x16 > /dev/null 2>&1 &
+
+    - name: npm install, build, and test
+      run: |
+        npm ci
+        npm run build --if-present
+        xvfb-run --auto-servernum npm run unit
+        xvfb-run --auto-servernum npm run funit
+        xvfb-run --auto-servernum npm run wunit
+      env:
+        CI: true