Jekyll server in Vagrant

Vagrantfile

Vagrant.configure("2") do |config|
    config.vm.box = "precise32"
    config.vm.box_url = "http://files.vagrantup.com/precise32.box"
    config.vm.network :forwarded_port, guest: 4000, host: 4000

    $script = <<SCRIPT
    sudo -i
    /usr/local/rvm/bin/gem install directory_watcher -v 1.4.1
    /usr/local/rvm/bin/gem install jekyll rdiscount --no-ri --no-rdoc
    cd /vagrant
    jekyll server --watch --detach --port 4000
SCRIPT
    config.vm.provision :shell, :inline => "sudo apt-get update && apt-get -y install build-essential curl && \\curl -L https://get.rvm.io | bash -s stable --ruby"
    config.vm.provision :shell, :inline => $script
end