Adding Discourse to a mix of nginx-hosted sites [How]

I set up a Discourse server today. It was pleasantly straightforward. The official docs work well enough, though there are a few things I did:

• integrated with existing nginx sites by cribbing from this guide (short version: forward Discourse requests to a socket)
• set up email delivery via MailJet- their admin interface makes getting credentials and setting up + verifying SPF and DKIM records simple
• set up certbot to generate LetsEncrypt certs (thanks Arch wiki) and get HTTPS rolling (bonus: https for existing sites for free!)
• added SSO for GitHub and Discord (short version: create the applications on the respective sites, support for these Oauth is baked in)
• typoed DenyUsers as DenyUser, locking myself out of ssh access

Maybe skip the last one if you’re doing the install yourself?