Well, again I don't really know what guides your following... If you install docker on ubuntu, and then install Portainer in docker... Well now all you have to do is use Stacks in Portainer to deploy docker-compose files. This would be the same across any OS.
I'm curious,, what is your issue with OMV, and what do you think going to Ubuntu or Raspbian will solve (or do you just want an OS w/ a desktop?)
I have no issues with OMV I think it's one of the best things I have come across in long time just not sure if it would fit what I want to try and do
What I'm looking to do is basically I have a quad core pc which is just sitting around doing nothing not even powered on. What my idea was to install a Linux OS and use the PC for low level mining but also install a docker/container for passive income via selling unused bandwidth. I have access to my uncles property which he only uses a few month out of the year but he still pays all the bills including electricity and Internet I explained it all to him and he was happy for me to try it out and see what happens and not charge me anything.
I know it sounds like a lot of work for possibly little to no chance of success but then all I have to lose is my time so I thought why not also I get to learn a bit about Linux and docker.
I sound crazy don't I?