new ci step for backend

.gitea/workflows/runner.yml

@@ -20,3 +20,13 @@ jobs:
             --exclude .git \
             --exclude .gitea \
             ./ /opt/rezept_finder/
+
+  deploy_backend:
+    runs-on: rezeptfinder-runner
+
+    steps:
+      - name: Prepare Python venv  
+        run: |
+          python3 -m venv /opt/rezept_finder/venv || true
+          /opt/rezept_finder/venv/bin/pip install --upgrade pip
+          /opt/rezept_finder/venv/bin/pip install -r /opt/rezept_finder/backend/requirements.txt

backend/requirements.txt

@@ -5,3 +5,5 @@ Flask-Migrate==4.0.7
 psycopg2-binary==2.9.9
 python-dotenv==1.0.1
 eventlet==0.36.1
+gunicorn
+