Taking the time to learn the Linux command line, and how to configure a docker-compose file will pay dividends when it comes to docker.

Just remember to locally mount all volumes. Makes transferring to another host stupid easy.

Focalboard is simple to use, and is pretty customizable.

I have mine hooked up to my PS2 with a dead disc drive to serve ISOs over the Ethernet port. It hosts a samba share so I can just dump ISOs from any device on LAN.