nginx-express

config

server {
  listen 80;
  server_name yourdomain.com;

  # Let's put all static files like images, js and css in sub-folder: public
  root /opt/apps/firstapp/public;

  #  static content
  location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico|xml)$ {
    # access_log        off;
    expires           15d;
  }

  location / {
    proxy_pass         http://127.0.0.1:3000;
    proxy_set_header   X-Real-IP            $remote_addr;
    proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    proxy_set_header   Host                   $http_host;
    proxy_set_header   X-NginX-Proxy    true;
    proxy_redirect off;
  }

  gzip on;
  gzip_comp_level 2;
  gzip_proxied any;
  gzip_min_length  1000;
  gzip_disable     "MSIE [1-6]\."
  gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
}

go be useful