fix(docker): resolve nginx and backend path configuration issues

- Add nginx/default.conf with simplified configuration to fix "no events section" error
- Update docker-compose.yml to mount nginx/default.conf instead of nginx.conf
- Fix backend/daemons.py data path from backend/data/daemons.json to data/daemons.json
- Improve users.json path detection with fallback logic in daemons.py
- Add servers directory to .gitignore
- Create DOCKER_FIX.md documentation with troubleshooting steps and solutions
- Ensure data directory is created automatically when backend starts

docker-compose.yml

@@ -49,7 +49,7 @@ services:
       - "80:80"
       - "443:443"
     volumes:
-      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
+      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
       - ./nginx/ssl:/etc/nginx/ssl:ro
     depends_on:
       - mc-panel