Nginx configuration for Node application

nodeproxy.conf

server {

    listen 80; 
    server_name CUSTOM_URL;

    location / { 
        proxy_pass http://127.0.0.1:PORT;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }   

}