better docker handling for shutdown

Dockerfile

@@ -40,7 +40,7 @@ RUN mkdir -p /app/emby-plugin && \
     echo '  echo "No Emby plugins directory found - skipping plugin deployment"' >> /app/deploy-plugin.sh && \
     echo '  echo "To enable plugin deployment, bind mount your Emby plugins directory to /emby-plugins"' >> /app/deploy-plugin.sh && \
     echo 'fi' >> /app/deploy-plugin.sh && \
-    echo 'exec python nfoguard.py' >> /app/deploy-plugin.sh && \
+    echo 'exec python -u nfoguard.py' >> /app/deploy-plugin.sh && \
     chmod +x /app/deploy-plugin.sh
 
 # Set ownership

nfoguard.py

@@ -19,6 +19,8 @@ from typing import Optional, Dict, Any, List, Set, Tuple
 import threading
 from concurrent.futures import ThreadPoolExecutor
 import uvicorn
+import signal
+import sys
 
 # Import our new modular components
 from core.database import NFOGuardDatabase
@@ -2201,7 +2203,16 @@ async def debug_tmdb_lookup(imdb_id: str):
 # Main
 # ---------------------------
 
+def signal_handler(signum, frame):
+    """Handle shutdown signals gracefully"""
+    _log("INFO", f"Received signal {signum}, shutting down gracefully...")
+    sys.exit(0)
+
 if __name__ == "__main__":
+    # Register signal handlers for graceful shutdown
+    signal.signal(signal.SIGTERM, signal_handler)
+    signal.signal(signal.SIGINT, signal_handler)
+    
     _log("INFO", "Starting NFOGuard")
     _log("INFO", f"Version: {version}")
     _log("INFO", f"TV paths: {[str(p) for p in config.tv_paths]}")
@@ -2210,9 +2221,15 @@ if __name__ == "__main__":
     _log("INFO", f"Config: manage_nfo={config.manage_nfo}, fix_mtimes={config.fix_dir_mtimes}")
     _log("INFO", f"Movie priority: {config.movie_priority}")
     
-    uvicorn.run(
-        app,
-        host="0.0.0.0", 
-        port=int(os.environ.get("PORT", "8080")),
-        reload=False
-    )
+    try:
+        uvicorn.run(
+            app,
+            host="0.0.0.0", 
+            port=int(os.environ.get("PORT", "8080")),
+            reload=False
+        )
+    except KeyboardInterrupt:
+        _log("INFO", "NFOGuard stopped by user")
+    except Exception as e:
+        _log("ERROR", f"NFOGuard crashed: {e}")
+        sys.exit(1)