🧑‍💻(ngnix) add conf ngnix to proxy media url

In development mode with docker-compose, we need to
configure Nginx to proxy requests to the Minio server.
Before to proxy to Minio, we need to
authenticate the request, so we proxy to the
Django server first to fill the request with the
necessary headers, then we proxy to Minio.

src/frontend/apps/impress/.env.development

@@ -1,3 +1,4 @@
 NEXT_PUBLIC_API_ORIGIN=http://localhost:8071
 NEXT_PUBLIC_SIGNALING_URL=ws://localhost:4444
+NEXT_PUBLIC_MEDIA_URL=http://localhost:8083
 NEXT_PUBLIC_SW_DEACTIVATED=true