

This is pretty much my setup as well. Proxmox on bare metal, then everything I do are in Ubuntu LXC containers, which have docker installed inside each of them running whatever docker stack.
I just installed Portainer and got the standalone agents installed on each LXC container, so it’s helped massively with managing each docker setup.
Of course you can do whatever base image you want for the LXC container, I just prefer Ubuntu for my homelab.
I do need to setup a golden image though to make stand-ups easier…one thing at a time though!
I don’t have any books in particular to recommend, but with homelab’ing we should be learning about the command line of our OS(Powershell, terminal(bash, zsh)).
Learning the ins and outs of something like bash, cron, environment variables, for loops, systemd services(managing, creating your own), command line networking…all things I’ve had to learn to either setup, manage, and/or troubleshoot my homelab.
So maybe basic Linux command line books? Probably O’Reilly has some along with bash.