I just added a recipe for backing up your #Discourse using restic, and a bunch of other updates, to my guide to Discourse deployment, as part of working on deploying a new Discourse instance. A bunch of plugins that I used to recommend adding are now in the core, which simplified the install.
https://meta.discourse.org/t/mkjs-opinionated-discourse-deployment-configuration/193355?u=mcdanlj

MKJ's Opinionated Discourse Deployment Configuration
I have been running a Discourse forum with a substantial amount of content and plenty of images over the past few years. Maker Forums has over 100GB of images and over 400,000 posts, of which a substantial amount was imported, primarily from Google+, and the rest was created on the site. This post describes elements of how I eventually configured Maker Forums and, later, a few other Discourse instances. This is what I wish I knew when I got started, and which I’ve used to help others avoid some ...





