Vagrant Root Login On Provision

Vagrant

Vagrant.configure(2) do |config|
  config.vm.box = "debian/jessie64"

  # --- IF private_key FILE EXISTS, THEN LOGIN AS root
  if File.exist?(Dir.getwd + "/.vagrant/machines/default/virtualbox/private_key")
    config.ssh.username = "root"
    config.ssh.private_key_path = "~/.ssh/id_rsa"
  end

  # --- COPY PUBLIC KEY INTO MACHINE ---
  ssh_pub_key = File.readlines("#{Dir.home}/.ssh/id_rsa.pub").first.strip
  config.vm.provision "private_key", type: "shell" do |s|
    s.inline = <<-SCRIPT
      mkdir -p /root/.ssh/
      echo #{ssh_pub_key} > /root/.ssh/authorized_keys
    SCRIPT
  end
end