Vagrantfile base for Packer null build

packer-build.json

{
    "variables": {
      "aws_access_key": "",
      "aws_secret_key": ""
    },

    "builders": [
        {
          "type":     "null",
          "host":     "machine.vagrant.dev",
          "ssh_username": "vagrant",
          "ssh_private_key_file": ".vagrant/machines/lew/virtualbox/private_key"
        },
        {
          "type": "amazon-ebs",
          "access_key": "{{user `aws_access_key`}}",
          "secret_key": "{{user `aws_secret_key`}}",
          "region": "us-east-1",
          "source_ami": "ami-9a562df2",
          "instance_type": "t2.micro",
          "ssh_username": "ubuntu",
          "ami_name": "lew-{{timestamp}}"
        }
    ],

    "provisioners": [
        {
          "type": "shell",
          "inline": ["curl -sSL https://get.docker.com/ubuntu/ | sudo sh"]
        },
        {
          "type": "shell",
          "inline": [
            "sudo docker run -p 80:8080 -d --restart=always somedockerrepo/somedockerproj"
          ]
        }
    ]
}

Vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby :

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|

# Requires the vagrant-landrush plugin
  if Vagrant.has_plugin?('landrush')
    config.landrush.enabled = true
    config.landrush.tld = 'dev'
    config.landrush.guest_redirect_dns = true
  end

  config.vm.define 'machine' do |base|
    base.vm.provider 'virtualbox' do |v|
      v.memory = 2048
      v.cpus = 2
    end
    base.vm.box = 'ubuntu/trusty64'
    base.vm.hostname = 'machine.vagrant.dev'
    base.vm.network 'private_network', type: 'dhcp'
  end

end