server { 
 listen 9000;
 server_name ftest default_server;
 
 location / {
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_set_header X-NginX-Proxy true;
   proxy_pass http://ftest_backend:9000/;
   proxy_set_header Host $http_host;
   proxy_cache_bypass $http_upgrade;
   proxy_redirect off;
 }
}