Enhance media API with video file validation and Docker configuration update

- Added a function to check if video files are complete and valid using ffprobe, preventing errors during thumbnail generation.
- Updated thumbnail generation logic to skip incomplete or corrupted files, improving robustness.
- Modified docker-compose.yml to include a restart policy for the camera management API service, ensuring better container reliability.

docker-compose.yml

@@ -5,6 +5,7 @@ services:
       context: ./camera-management-api
       dockerfile: Dockerfile
     working_dir: /app
+    restart: unless-stopped  # Automatically restart container if it fails or exits
     volumes:
       - ./camera-management-api:/app
       - /mnt/nfs_share:/mnt/nfs_share