Nginx proxy pass to port 80 for Node / Rails app etc..

gistfile1.nginxconf

server {
    listen 80;
    server_name localhost.my_node_app
    alias 10.72.12.91; #Rewrite all incoming requests to this app - for debugging on mobile devices etc where we cannot add to the hosts file.
    access_log /var/log/nginx/my_node_app.log;

    location / {
      #Set correct headers
      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;
      
      #Node / Rails app server
      proxy_pass http://127.0.0.1:5000;
    }
 }

#cd /etc/nginx/sites-available/
#vim my_node_app
#ln -s /etc/nginx/sites-available/my_node_app /etc/nginx/sites-enabled/my_node_app