As I understand it, with Docker For Mac, what we really have is:
Native Mac OSX
An entire linux VM system running on the Mac OSX using the hypervisor technology of the Mac to begin with.
Every other container as a container on top of the linux VM system.
This leaves me wanting to poke into this bridge and see how it is set up, what it is doing, etc. Is there a way to spin up a copy of that VM or connect directly to it in some way?
Docker for mac uses xhyve to virtualize a linux vm, but perfomance is not so good. What I recommend, if you can, is switch to a machine with linux installed.