Vagrantfle to install chruby, ruby-install, ruby2.3 and the bundler gem

Vagrantfile

Vagrant.configure(2) do |config|
  config.vm.box = "ubuntu/trusty64"

  config.vm.provision :shell, inline: <<-SHELL
    # function to run a command as the vagrant user
    as_vagrant () {
      sudo -i -u vagrant bash -c "$1"
    }

    sudo apt-get update -y
    sudo apt-get upgrade -y
    sudo apt-get install git -y

    echo 'create src dir...'
    as_vagrant 'mkdir ~/src'

    echo 'install chruby...'
    as_vagrant 'git clone https://github.com/postmodern/chruby.git ~/src/chruby'
    as_vagrant 'cd ~/src/chruby && sudo make install'
    # echo to .profile as it is read by sudo -i (unlike .bashrc)
    as_vagrant "echo 'source /usr/local/share/chruby/chruby.sh' >> ~/.profile"
    as_vagrant "echo 'source /usr/local/share/chruby/auto.sh' >> ~/.profile"

    echo 'install ruby-install...'
    as_vagrant 'git clone https://github.com/postmodern/ruby-install.git ~/src/ruby-install'
    as_vagrant 'cd ~/src/ruby-install && sudo make install'

    echo 'install rubyies...'
    #as_vagrant 'ruby-install ruby 2.0'
    #as_vagrant 'ruby-install ruby 2.1'
    #as_vagrant 'ruby-install ruby 2.2'
    as_vagrant 'ruby-install ruby 2.3'

    echo 'set default ruby...'
    as_vagrant "echo '2.3' > .ruby-version"

    echo 'gem install bundler...'
    as_vagrant 'gem install bundler'

  SHELL
end