I'm trying to bring up some DO boxes in vagrant

# vim: ft=ruby

Vagrant.configure('2') do |config|

  cluster = {
    0 => { 
      'name' => 'backups', 
      'image' => 'ubuntu-16-04-x64' 
    },
    1 => {
      'name' => 'client1',
      'image' =>  'debian-9-x64'
    },
    2 => {
      'name' => 'client2',
      'image' =>  'debian-8-x64'
    },
    3 => {
      'name' => 'client3',
      'image' =>  'ubuntu-16-04-x64'
  }
 } 

  config.vm.provision "ansible" do |ansible|
    ansible.playbook = "playbook/site.yml"
    ansible.host_vars = {

    }
  end

  cluster.each do |i, machine|
    config.vm.define "#{machine['name']}" do |machine_id|
      machine_id.ssh.private_key_path = '~/.ssh/id_rsa.digitalocean'
      machine_id.vm.box = 'digital_ocean'
      machine_id.vm.hostname = "#{machine_id['name']}"
      machine_id.image = "#{machine_id['image']}"

      machine_id.vm.provider :digital_ocean do |provider, override|
        override.vm.box_url = 
"https://github.com/devopsgroup-io/vagrant-digitalocean/raw/master/box/digital_ocean.box";
        provider.token = `echo $DO_API_TOKEN`
        provider.region = 'lon1'
        provider.size = 's-1vcpu-1gb'
      end
    end
  end
end


As you can see, the variables will be the hostname and the image used for 
each box. I found something like the obvoe online and have tried to adapt 
it, but I've had massive problems. I'm still a bit new to Ruby, and am 
having some problems with the syntax. At this point, I get errors like:


vm:
* The hostname set for the VM should only contain letters, numbers,
hyphens or dots. It cannot start with a hyphen or dot.

Vagrant:
* Unknown configuration section '[]'.
* Unknown configuration section 'image='.


Obviously the interpolation is not working. Any idea where to start with 
this? I think I just need a bit of extra knowledge to work out where I'm 
going wrong with both Vagrant and loops in Ruby.

Thanks

Jerry

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