Setup Multisite Configuration with Let's Encrypt and no Reverse Proxy

documentation sysadmin
4

Hi
I started with a standard Discourse install (at DigitalOcean), then setup nginx (using these instructions) because I wanted a couple of Drupal sites on the same droplet
If I want to have another instance of Discourse should I follow the above?

Or would this guide be better?

Thanks!
/Sifaan