Use user specific tmp directory

Docker Desktop for Mac
1

Expected behavior

With multiple users be able to run a docker server for each user.

Actual behavior

Docker server for second user cannot be created because of permission issues:
: Failed to remove existing socket on /var/tmp/com.docker.osxfs.volume.socket: remove /var/tmp/com.docker.osxfs.volume.socket: permission denied

Information

Docker uses a hardcoded path /var/tmp/ for state and socket files. It would be preferred to use a user specific tmp path like $TMPDIR which results in a unique user specific temporary folder.

Steps to reproduce the behavior

  1. Start docker server for user1
  2. logout user1/switch user2
  3. Try to start docker server for user2
2

The sockets are being moved, other than the main docker socket, which is expected by the client, we will either change the client behaviour or some other workaround here.