docker file update

index.js

@@ -54,4 +54,9 @@ process.on('SIGTERM', async () => {
         console.error('Error during shutdown:', error);
         process.exit(1);
     }
+});
+
+// Add health check endpoint
+app.get('/health', (req, res) => {
+    res.status(200).json({ status: 'healthy' });
 });