I’m guessing you want an all-in-one server setup for NAS duties and services?
UnRAID is probably the simplest from a management point of view for storage and docker.
If you’d prefer something free, then OpenMediaVault works great. It can handle storage (Linux MD-RAID, BTRFS, ZFS, or mergerfs + SnapRAID) and compute tasks like VMs and Docker/Docker Compose all from a web interface. The only problems I’ve encountered with OMV is trying to click through configuration changes too fast and getting ‘stuck’ in a loop of applying conflicting changes. As long as you wait a second or two after hitting OK/apply on things, then you’re good.
I use TrueNAS SCALE myself with docker and other services running in systemd-nspawn containers. I have a separate Intel NUC running Proxmox.