perf router template

src/main.ts

@@ -1,10 +1,9 @@
 // 单应用实例启动
-
 import { useConfig } from '@kevisual/use-config/env';
 import { app } from './index.ts';
 
 const config = useConfig();
-
-app.listen(config.port, () => {
-  console.log(`server is running at http://localhost:${config.port}`);
+const port = config.PORT || 4000;
+app.listen(port, () => {
+  console.log(`server is running at http://localhost:${port}`);
 });