feat: ec2 lab

Author: boale

src/main.ts

@@ -7,6 +7,6 @@ async function bootstrap() {
   const app = await NestFactory.create(AppModule);
   app.useGlobalPipes(new ValidationPipe());
   app.useGlobalFilters(new CustomExceptionFilter());
-  await app.listen(3000);
+  await app.listen(process.env.PORT || 3000);
 }
 bootstrap();