HTTP forwarding with nginx

upstream supatest {
  server 192.168.35.110:80;  
}

upstream jenkins {
  server 192.168.35.110:8001;  
}

upstream selenium_hub {
  server 192.168.35.110:4444;  
}

upstream selenium_grid_extra_dash {
  server 192.168.35.110:3000;  
}


server {
  listen 80;
  server_name supa.local;
  location / {
    proxy_set_header Host $host;
    proxy_pass http://supatest;
  }
}

server {
  listen 8001;
  server_name hostname;
  location / {
    proxy_set_header Host $host;
    proxy_pass http://jenkins;
  } 
}

server {
  listen 4444;
  server_name hostname;
  location / {
    proxy_set_header Host $host;
    proxy_pass http://selenium_hub;
  }
}

server {
  listen 3000;
  server_name hostname;
  location / {
    proxy_set_header Host $host;
    proxy_pass http://selenium_grid_extra_dash;
  }
}