First ci update

.github/workflows/ci.yml

@@ -1,7 +1,22 @@
 name: 'Continuous Integration'
 
 on:
-  ...
+  pull_request:
+    branches: [ main ]
 
 jobs:
-  ...
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.8'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+    - name: Run tests
+      run: |
+        make model-test