Have a VPS running HestiaCP which should run a single or multi tenant Nodejs application? These are the templates that are gonna help you set it up out of the box! These templates were designed to just work, specially if you're running your servers behind CloudFlare.
Copy these files into /usr/local/hestia/data/templates/web/nginx/, restart Nginx and you should already see the templates listed in the Backend Template option in the Advanced Options on your domain settings page.