test.json

{
  "variables": {
      "aws_access_key": "{{env `AWS_ACCESS_KEY`}}",
      "aws_secret_key": "{{env `AWS_SECRET_KEY`}}",
      "iam_instance_profile": "api-stage"
  },
  "provisioners": [
    {
      "type": "ansible",
      "playbook_file": "ansible/site.yml",
      "groups": "apiservers",
      "inventory_directory": "ansible/",
      "extra_arguments": [
        "--extra-vars",
        "{ansible_python_interpreter: '/usr/bin/env python3'}"
      ]
    }
  ],

  "builders": [{
    "type": "amazon-ebs",
    "access_key": "{{user `aws_access_key`}}",
    "secret_key": "{{user `aws_secret_key`}}",
    "region": "us-east-1",
    "subnet_id": "subnet-c3c805a7",
    "source_ami_filter": {
      "filters": {
      "virtualization-type": "hvm",
      "name": "ubuntu/images/*ubuntu-xenial-16.04-amd64-server-*",
      "root-device-type": "ebs"
      },
      "owners": ["099720109477"],
      "most_recent": true
    },
    "instance_type": "t2.micro",
    "ssh_username": "ubuntu",
    "ami_name": "api-stage {{timestamp}}"
  }]
}