I tried truenas and was at first enamored but felt quite limited when it came to using docker compose. There are no official ways for using it. Additionally because it uses kubernetes under the hood it’s not as easy to go under the hood to make it work, as it requires knowledge of that in addition to docker. There is an unofficial docker compose package but there is almost no documentation that I could find and it seems to be largely unmaintained nowadays.

The other OS are good candidates, though through my research, if you are after reliability, people seem to prefer Debian with its more robust validation of updates.

I’m here mostly because I’m setting up my own homelab and I’m preparing for making use of Alpine Linux, which has no desktop environment which makes it particularly fast to boot. Additionally it is very robust, has decent documentation and allows for quite some customization but requires to learn a bit about how to make it work. With its barebone structure, it is more secure as it has a smaller attack surface and you only install what you need. Perhaps an alternative for you to consider?

Edit: to keep some sanity while needing to manage your homelab, make sure to put some weight on an os you are familiar with. I have juggled for months between OSs to find what does what I want but it has been a long battle of learning everything from scratch every time. Having tried proxmox, truenas, xcpng, and now hopefully settling with Alpine and zfs. Go the more sane way, any of those first three will work just fine.