I'm just a new owner of a Proxmox box and people seem to be big into dockerizing and running things as 'apps' now. The lack of installation/maintenance is the appeal of running stuff with containers though.
At least that's the argument I keep hearing.
In the time since I've made my first post asking for recommendations I've found that it's...marginal at best.
I do like how quickly I can spin up and destroy VMs in Proxmox though. I used to use Vultr for that task, for trying new things. I like owning my own hardware for that purpose now though, much cheaper, and zero cost to just store a stopped container (aside from storage).
I really like spinning up a container for setting up toolchains for compilation/development. Especially for firmware. Like I've set up CircuitPython containers, Armbian containers (not firmware, but the concept is the same), and so on.
Keeps things consistent and clean. Plus checkpointing with pinned backups seems nice.