Comment by TomK32

Buying new tracks like when I was still using iTunes would be nice. Bandcamp comes close but I don't mind the extra step of downloading the zip file and running my script to have it in my music server. Where I also have plenty of digitalized CDs that I own.

Spec-wise, start cheap and upgrade the CPU/RAM when you hit limits. It's not like you'll use all those services at the same time. My home containers all run on a recently purchased HP Mini G2 that I upgraded from a 6100 to a 8-core 6700 and the RAM is an odd 24GB. It even has a rarely used minecraft server. Docker containers are bundled into proxmox instances per user or whatever makes the most sense.