you are missing the point of OSXFS, it has been developed mainly to overcome to the limit of network filsystems that don't support propagation of filesystem events.
I'd strongly argue that inotify propagation without usable filesystem performance is wasted utility if it can't be used practically.
This project was excellent for Boot2Docker maybe it can be used on Docker for Mac?
This and other options have been discussed earlier in the thread. For this solution in particular, the downfall is that syncing is one-way. Applications that modify the "shared" volume don't have their changes pushed back to the host filesystem. For example, running
npm install for a node application doesn't save modules between container runs.
It surprises me to see the current iteration in the release candidate phase, as a huge number of use cases simply aren't supported by the filesystem problem at the moment. I don't mean to sound like a broken record here, but this problem has had numerous attempts at a solution in the past, and still hasn't been cracked. I'm not sure this is something the (very talented) Docker team can whip up in a few months.
The decades-old NFS, while being developed well before inotify/fsevents which were created in the last 10 years, is a kernel-level feature and extraordinarily performant. The only thing missing with that solution is the propagation of inotify/fsevents -- and that is a very solvable problem.
Every day, my team uses dlite (docker implementation using NFS on xhyve) combined with my fork of fsevents-to-vm (fsevents/inotify forwarding daemon) for an extremely responsive docker-on-mac experience with full support for file change events. If osxfs were pivoted to be a more-native fsevents daemon on top of NFS (perhaps without using SSH, to reduce latency), these usability problems would be solved in the short term, and the world would have a much more user-friendly and maintenance-free version of that workflow.
Apologies for repeating myself, but at this phase with such an outstanding issue in RC1, I hope you'll consider it!