I see, I was on that path not long ago, I finally realized I do not need Proxmox and it would create unnecessary complexity for me. In truenas you can install many services (apps), they use docker under the hood, or you can create your own docker app, its much easier to manage. At least for me. I have installed e. g. Jellyfin, audiobookshelf, adguard, home assistant, nginx proxy manager and eveything without a hitch. And by “installed” i mean I found the app in truenas store, hit install and in user friendly form I just assigned a couple of parameters (like storage location). It can even create a dataset for each app for you and you dont have deal with acl and similar. (Although I chpse to handle the datasets myself to have more control over it).