TrueNAS Scale’s Docker implementation is currently really mediocre - it’s implemented as an app store style experience - and deploying/managing containers via the CLI isn’t officially supported although it works fine. They do have a more generic container management implementation in beta at the moment.
I strongly recommend TrueNAS Scale. It’s built on Debian, and has full docker implementation.
sadly it was announced that TrueNAS is becoming closed source Closed Source TrueNAS
TrueNAS Scale’s Docker implementation is currently really mediocre - it’s implemented as an app store style experience - and deploying/managing containers via the CLI isn’t officially supported although it works fine. They do have a more generic container management implementation in beta at the moment.