vagrant/templates/Vagrantfile.erb

Vagrant::Config.run do |config|
  # All Vagrant configuration is done here. For a detailed explanation
  # and listing of configuration options, please view the documentation
  # online.

  # Every Vagrant virtual environment requires a box to build off of.
  config.vm.box = "<%= default_box %>"

  <% if !default_box_url.nil? -%>
  # The url from where the 'config.vm.box' box will be fetched if it
  # doesn't already exist on the user's system
  config.vm.box_url = "<%= default_box_url %>"
  <% end -%>
end