Use native nfs volumes instead of docker sync

[acrobat]

See https://medium.com/@sean.handley/how-to-set-up-docker-for-mac-with-native-nfs-145151458adc

To get it up and running you should do the following:

• Run spaceport setup-nfs (only 1 time to setup the correct settings)
• Run spaceport start in a project (all the other settings get setup automatically)

I will provide another PR with a diagnose command to provide a command to debug a problem (missing nfsd, incorrect settings, etc)

The blogpost does a setup so nfs mounts the root project directory /Users. But this messes things up on some occasions, so I did the setup the same a vagrant by creating a /etc/exports entry for each project path. This will avoid any conflicts

TODO:

• Make sure /etc/exports paths don't overlap (manual check)
• Setup nfs command recheck
• Check if /etc/exports file exists No problem as the command will pipe the info into the file or create it when it doesn't exist
• spaceport start prints "error", but continues (empty /etc/exports or specific line not found by grep check?) Fixed by running the grep commands in quite mode
• Docker restart during startup can timeout if it takes 60 sec or longer. So move the restart to async and let the while look check?
• Check if exports path's don't overlap. If so don't add the path to exports (project with a docker project in vendor)
• Modify npm container config to also use nfsmount instead of old/remove docker-sync app mount