vagrant

https://github.com/mitchellh/vagrant

Ruby

Vagrant is a tool for building and distributing development environments.

VagrantPlugins::DockerProvider::Config#vagrant_vagrantfile=

The path to the Vagrantfile that contains a VM that will be
started as the Docker host if needed (Windows, OS X, Linux
without container support).

Defaults to a built-in Vagrantfile that will load boot2docker.

NOTE: This only has an effect if Vagrant needs a Docker host.
Vagrant determines this automatically based on the environment
it is running in.

Source | Google | Stack overflow

Edit

git clone [email protected]:mitchellh/vagrant.git

cd vagrant

open plugins/providers/docker/config.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-VagrantPlugins--DockerProvider--Config-vagrant_vagrantfile--for-pr

# Commit to git

git add plugins/providers/docker/config.rbgit commit -m "better docs for VagrantPlugins::DockerProvider::Config#vagrant_vagrantfile="

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-VagrantPlugins--DockerProvider--Config-vagrant_vagrantfile--for-pr

hub pull-request

# Celebrate!