You must not have a VirtualBox installation earlier than version 4.3.30 on your system.
Docker Machineĭocker for Mac does not affect previous machines created via Docker Machine, The installation gives you the option to copy containers and images from your local default machine if you have one. When you want to use a VirtualBox VM you have set up with docker-machine, simply run eval $(docker-machine env default) (assuming you want to target the machine “default”). When you use Docker for Mac, you need to unset all of your environment variables, using one of the methods above. You can run both Docker Toolbox and Docker for Mac on the same system, but not at the same time. Running Docker Toolbox and Docker for Mac on the same host When you run env | grep DOCKER now, you should see no output. If you use Bash, you can use unset $ to unset all of the Docker environment variables (this does not work in other shells, like zsh or csh).
