Fix Docker deployment issues and add fresh database support

- Fix: Add missing 'click' import to app.py to resolve startup error
- Fix: Update docker-compose.yml volume mappings to use correct persistent storage paths (/opt/digi-s)
- Improve: Enhanced entrypoint.sh for better database initialization
- Update: Configuration files for improved deployment

This resolves the Docker container startup issues and ensures proper persistent storage.

docker-compose.yml

@@ -11,6 +11,6 @@ services:
       - ADMIN_PASSWORD=Initial01!
       - SECRET_KEY=Ma_Duc_Dupa_Merele_Lui_Ana
     volumes:
-      - /home/pi/Desktop/digi-server/db:/app/instance
-      - /home/pi/Desktop/digi-server/static:/app/static/uploads
+      - /opt/digi-s/instance:/app/instance
+      - /opt/digi-s/static/uploads:/app/static/uploads
     restart: unless-stopped