Markdown/HTML, CSS, and Javascript to pull in the latest videos from Peertube as well as replace Owncast's chat with a Discord embed.
Use the Owncast settings for this:
custom.md
goes into Configuration -> General -> General -> Custom Page Contentcustom.css
goes into Configuration -> General -> Appearance -> Customize your page sytling with CSScustom.md
goes into Configuration -> General -> Custom Scripting -> Customize your page with Javascript