HEXA-134 Automatically run tests on every pull request (#34)

.github/workflows/linting.yml

@@ -1,4 +1,4 @@
-name: pre-commit
+name: Lint
 
 on:
   pull_request:

.github/workflows/test_in_docker.yml

@@ -0,0 +1,26 @@
+name: Test
+on:
+  pull_request:
+  push:
+    branches: [ master ]
+
+jobs:
+  test:
+    name: Run test suite
+    runs-on: ubuntu-latest
+    env:
+      DOCKER_USER: ${{ secrets.DOCKERHUB_USERNAME }}
+      DOCKER_PASS: ${{ secrets.DOCKERHUB_TOKEN }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Login to DockerHub
+        run: docker login -u $DOCKER_USER -p $DOCKER_PASS
+
+      - name: Build docker images
+        run: docker-compose build
+
+      - name: Run Django tests
+        run: docker-compose run app test