5. Install Docker Machine docker-machine
The last time one of these discussions came up and a similar solution was provided, someone pointed out that 'docker-machine' is not a dependable solution. I can't remember the exact reason, nor can I find the link, but it was something along the lines of Docker making it proprietary or abandoning the project.

Can anyone provide any more detail about the state of 'docker-machine' or help clarify any issues with hitching your wagon to these 'docker-machine' solutions?

Just visit the repo: https://github.com/docker/machine It is archived and hasn't had a commit in almost 2.5 years. See also: https://github.com/docker/roadmap/issues/245