fix: custom host support for mcp

Author: sinedied

packages/burger-mcp/function.json renamed to packages/burger-mcp/handler/function.json

@@ -27,6 +27,7 @@
   "devDependencies": {
     "@types/express": "^5.0.0",
     "@types/node": "^20",
-    "tsx": "^4"
+    "tsx": "^4",
+    "typescript": "^5.8.3"
   }
 }

packages/burger-mcp/package.json

@@ -142,7 +142,7 @@ app.post('/messages', async (req: Request, res: Response) => {
 });
 
 // Start the server
-const PORT = process.env.PORT || 3000;
+const PORT = process.env.FUNCTIONS_CUSTOMHANDLER_PORT || process.env.PORT || 3000;
 app.listen(PORT, () => {
   console.log(`Burger MCP server listening on port ${PORT} (Using burger API URL: ${burgerApiUrl})`);
 });