I'll start. Did you know you can run a headless version of JD2 on a raspberry pi? It's not the greatest thing in the world, but sometimes its nice to throw a bunch of links in there and go to sleep.
Make sure you have backups of your vault. Reliable backups.
Especially if you are just starting off with docker, you don't want to loose access to all your accounts because you f up some configuration (e.g. redeploy an updated image)