create GitHub action

.github/workflows/docker_compose.yml

@@ -0,0 +1,20 @@
+name: Docker Compose CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+    - name: Build docker images
+      run: docker-compose build -d
+    - name: Enter node app container
+      run: docker exec -it app bash
+    - name: Run tests
+      run: npm test