Is there an app or some other no-brainer way to backup my Umbrel system?
I figure if I start using Files I really need to have a good backup strategy.
You could use Duplicati (available in the umbrelos app store). It all depends on what you want to back up. Plan well what you want to do.
Personally, I haven’t tried it and I don’t know if it will work for you as you want but it’s a good starting point.
A complete system backup is possible (apparently) with Duplicati but hacky. As Duplicati lives inside a docker container full root access to Umbrel filesystem becomes an issue. There is a thread on this however I have never personally got it to work and keep working
https://community.umbrel.com/t/diy-backup-soltution-without-usage-of-the-cli/