As long as the 3D shadow of the lamp is ok, there’s no problem

I am using MX Linux (Debian based) and at install I chose FDE, just with the GUI it’s easy to have LUKS+btrfs, nothing special to do. Encryption is done by hardware, your CPU has AES instructions that can encode/decode gigabits/s and is not a bottleneck at all.

docker I guess, I still don’t know how it works, create them, etc