Add docker-example workflow

Signed-off-by: Marc Dumais <[email protected]>

.github/workflows/docker-example.yml

@@ -0,0 +1,35 @@
+name: docker-example
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build-and-test:
+    name: Build image
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 15
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+
+    steps:
+
+    - uses: actions/checkout@v3
+
+    - name: Build example-docker
+      run: |
+        cd examples/docker
+        docker build -t tte .
+
+    - name: Test
+      run: |
+        docker run --init -d -p 0.0.0.0:4000:4000 --name tte-1 tte
+        # ln -s example-package.json package.json
+        # yarn test:docker
+        sleep 20
+        wget https://localhost:4000

examples/docker/example-package.json

@@ -39,7 +39,8 @@
   "scripts": {
     "prepare": "theia build",
     "start": "theia start",
-    "watch": "theia build --watch"
+    "watch": "theia build --watch",
+    "test:docker": "wget localhost:4000"
   },
   "engines": {
     "yarn": "1.0.x || >=1.2.1",