add tests and automated tests

.gitea/workflows/deploy.yaml

@@ -11,7 +11,15 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+      - name: Test backend
+        uses: actions/setup-python@v4
+        with: 
+          python-version: "3.11"
+        run: |
+          - python -m pip install --upgrade pip
+          - pip install -r back/requirements.txt
+          - pytest -sv
+
       - name: Build & deploy
         run: |
-          git pull
           docker compose up -d --build