Yes it is!
Although I can’t migrate from CORE and have the service migrated seamlessly unless I use VMs.
And I don’t know docker containers, so it is something else I’d have to learn and understand. If I have to choose, I’d probably learn LXN/Incus instead.
I’ve been slowly, but steadily, migrating the services I run on my TrueNAS CORE (FreeBSD) from Jails to Debian VMs so I can migrate to TrueNAS 25 (no more SCALE it seems, and Linux) around April without many hurdles, hopefully.
Besides having to learn some systemd, it has been a smooth ride.
Now I’m down to the last 2 services, which I think are the most complicated setups I have and with no nice deb packages to ease installation: Paperless-ngx and Photoprism.
I’ll probably look into playing with Containers (LXC/Incus) to have the same lightweight and efficiency as Jails once the migration to Linux is done. But honestly, if everything is running nicely, I won’t be very motivated to do so, let’s see.
Sorry Google, PostmarketOS will scratch that itch and soon enough eat your lunch: https://postmarketos.org/