{
  "variables": {
    "intsance_size": "t2.small",
    "ami_name": "ami-ryanj",
    "base_ami": "ami-1853ac65",
    "ssh_username": "ec2-user",
    "vpc_id": "",
    "subnet_id": ""
  },
  "builders": [{
    "type": "amazon-ebs",
    "region": "us-east-1",
    "source_ami": "{{ user `base_ami`}}",
    "instance_type": "{{ user `intsance_size` }}",
    "ssh_username": "{{ user `ssh_username` }}",
    "ssh_timeout": "20m",
    "ami_name": "{{ user `ami_name` }}",
    "ssh_pty": "true",
    "vpc_id": "{{ user `wpc_id` }}",
    "subnet_id": "{{ user `subnet_id` }}",
    "tags": {
      "Name": "App Name",
      "BuiltBy": "Packer"
    }
  }],
  "description": "AWS Image",
  "provisioners": [
    {
      "type": "shell",
      "inline":  [
        "sudo yum upate -y",
        "sudo yum install -y git"
      ]
    }
  ]
}