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They have invested a lot of resources into FreeBSD which uses Jails rather than Docker (I know not a direct comparison).

I wonder if anyone knows if this recent infrastructure is for a different part of the system or if they have been phasing out FreeBSD?

I think it would have been very cool if they went with Jails rather than Docker, it would have been great to see any presentations they often show to the FreeBSD community on quite how the orchestrated a number of Jails.