feat: Set up GitHub Actions CI pipeline for backen

.github/workflows/ci.yml

@@ -0,0 +1,47 @@
+name: Continuous Integration
+
+on:
+  push:
+    branches: [ '*' ]
+  pull_request:
+    branches: [ '*' ]
+
+jobs:
+  backend:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: .ruby-version
+
+    - name: Install dependencies
+      run: bundle install
+
+    - name: Set up test database
+      run: |
+        cp config/database.yml.travis config/database.yml
+        bundle exec rake db:create db:schema:load
+
+    - name: Run tests
+      run: bundle exec rake test
+
+  frontend:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: '12.x'
+
+    - name: Install dependencies
+      run: yarn install
+
+    - name: Run tests
+      run: yarn test