But where are you going to run the image? On a Mac Mini in your DC?
BTW macOS being a BSD derivative of sorts might benefit from Docker development on FreeBSD, which uses jails instead of cgroups, etc. At least, that could be easier to port, assuming that macOS kernel has the needed facilities.
Too bad because a native apple docker would be really really useful. imagine:
(I'm not talking about the current docker on mac which runs linux in a vm)