Enable GitHub Actions

Signed-off-by: Sheng Chen <sheche@microsoft.com>

Author: jdneo

.github/workflows/build.yml

@@ -0,0 +1,123 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  linux:
+    name: Linux
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Setup Build Environment
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libxkbfile-dev pkg-config libsecret-1-dev libxss1 dbus xvfb libgtk-3-0 libgbm1
+        sudo /usr/bin/Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
+        sleep 3
+
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: '11'
+
+    - name: Setup Node.js environment
+      uses: actions/setup-node@v2
+      with:
+        node-version: 12
+        
+    - name: Install Node.js modules
+      run: npm install
+
+    - name: Install build tools
+      run: npm install -g vsce gulp typescript
+
+    - name: Lint
+      run: gulp tslint
+
+    - name: Package
+      run: vsce package
+
+    - name: Test extension
+      run: DISPLAY=:99 npm test
+
+    - name: Print language server Log if job failed
+      if: ${{ failure() }}
+      run: find $HOME/.config/Code/User/workspaceStorage/*/redhat.java/jdt_ws/.metadata/.log -print -exec cat '{}' \;;
+
+  windows:
+    name: Windows
+    runs-on: windows-latest
+    timeout-minutes: 30
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: '11'
+
+    - name: Setup Node.js environment
+      uses: actions/setup-node@v2
+      with:
+        node-version: 12
+        
+    - name: Install Node.js modules
+      run: npm install
+
+    - name: Install build tools
+      run: npm install -g vsce gulp typescript
+
+    - name: Lint
+      run: gulp tslint
+
+    - name: Package
+      run: vsce package
+
+    - name: Test extension
+      run: npm test
+
+    - name: Print language server Log if job failed
+      if: ${{ failure() }}
+      run: Get-ChildItem -Path $env:APPDATA/Code/User/workspaceStorage/*/redhat.java/jdt_ws/.metadata/.log | cat
+
+  darwin:
+    name: macOS
+    runs-on: macos-latest
+    timeout-minutes: 30
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: '11'
+
+    - name: Setup Node.js environment
+      uses: actions/setup-node@v2
+      with:
+        node-version: 12
+
+    - name: Install Node.js modules
+      run: npm install
+
+    - name: Install build tools
+      run: npm install -g vsce gulp typescript
+
+    - name: Lint
+      run: gulp tslint
+
+    - name: Package
+      run: vsce package
+
+    - name: Test extension
+      run: npm test
+
+    - name: Print language server Log if job failed
+      if: ${{ failure() }}
+      run: find $HOME/Library/Application\ Support/Code/User/workspaceStorage/*/redhat.java/jdt_ws/.metadata/.log -print -exec cat '{}' \;;