Docker For Mac also does some other cool things, for instance exposed container ports are available at the address `docker.local`. Solutions to help deal with filesystem permission mis-matches, filesystem notifications, and VPN compatibility (all of which are things VirtualBox struggles with) are also being baked in.
It does in the latest update. Just run "pinata set native/port-forwarding true" and your docker containers will be accessible via localhost.
Previously this only worked with the VPN compatibility mode, but it's available on its own now.
I also recommend running "pinata set network nat".