Yup, I'm also using Cloudflare tunnels with a private domain. The docs saying what to do on Cloudflare's side weren't that easy to find though. It's too easy to accidentally fall into their docs on Argo Tunnels or the "zero-trust" thing.
Once it's set up though, it's really awesome
You'll just open the floodgates to more melen-lutions -- umbremelon, espemelon, sylvemelon, glacemelon.
That's just the tip of the iceberg lettuce. (Volcano lettuce, tornado lettuce...)