myapp.vhost

# configure our upstream app (name, ip, port)
upstream app_name_wtf {
        server 127.0.0.1:3000;
}

server {
        listen [::]:80;
	# sets the listening domainname
        server_name sub.domain.com;
        location / {
                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;
		# edit the app name in here...
                proxy_pass http://app_app_name_wtf/;
                proxy_redirect off;
        }
        access_log /var/log/nginx/access_log main;
        error_log /var/log/nginx/error_log info;
}