If you look at the contents of the .app, you can edit main.scpt in AppleScript Editor, but it's really just doing two things, creating the VM if necessary: doc

If you look at the contents of the .app, you can edit main.scpt in AppleScript Editor, but it's really just doing two things, creating the VM if necessary: docker-machine create -d virtualbox --virtualbox-memory 2048 default and populating environment variables for docker: eval $(docker-machine env default) Passing --shell zsh to docker-machine env doesn't seem to change its output. Does zsh understand commands like the following? export DOCKER_MACHINE_NAME="default"