I don't understand the appeal of Docker on FreeBSD. The native jails on FreeBSD basically do the same thing by default (spin up a jail, execute a command, exit) unless you explicitly tell them to persist (at that point, they behave more like LXC than Docker).

Except FreeBSD jails are way easier to manage in terms of storage and networking.

Although I disagree with the need for Docker on FreeBSD, I actually agree with your statement -- Docker is such a popular thing right now that not supporting it will probably keep some people from trying FreeBSD.

On the other hand, the BSDs in general are communities where the Eternal September seems to be quieter than elsewhere. They're rock-solid and technically brilliant, but they're just not 'mainstream,' and not really trying to be. It bugs me sometimes, too, but I just don't think that getting more popular is what most people in that community are interested in.