vagrant

https://github.com/mitchellh/vagrant

Ruby

Vagrant is a tool for building and distributing development environments.

VagrantPlugins::DockerProvisioner::Installer#ensure_installed

This handles verifying the Docker installation, installing it if it was
requested, and so on. This method will raise exceptions if things are
wrong.

Source | Google | Stack overflow

Edit

git clone [email protected]:mitchellh/vagrant.git
cd vagrant
open plugins/provisioners/docker/installer.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-VagrantPlugins--DockerProvisioner--Installer-ensure_installed-for-pr

# Commit to git
git add plugins/provisioners/docker/installer.rbgit commit -m "better docs for VagrantPlugins::DockerProvisioner::Installer#ensure_installed"

# 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--DockerProvisioner--Installer-ensure_installed-for-pr
hub pull-request

# Celebrate!