Merge pull request #1820 from peterfication/add-hint-to-global-middleware

docs(middlewares): Add hint for global middlewares and DI

Author: kamilmysliwiec

content/middlewares.md

@@ -241,3 +241,5 @@ const app = await NestFactory.create(AppModule);
 app.use(logger);
 await app.listen(3000);
 ```
+
+> info **Hint** Accessing the DI container in a global middleware is not possible. You can use a [functional middleware](middleware#functional-middleware) instead when using `app.use()`. Alternatively, you can use a class middleware and consume it with `.forRoutes('*')` within the `AppModule` (or any other module).