gistfile1.txt

{
  "variables": {
    "name": null,
    "region": "us-east-1"
  },

  "builders": [
    {
      "type": "amazon-ebs",
      "region": "{{user `region`}}",
      "source_ami_filter": {
          "filters": {
            "virtualization-type": "hvm",
            "name": "ubuntu/images/*ubuntu-focal-20.04-amd64-server-*",
            "root-device-type": "ebs"
          },
          "owners": ["099720109477"],
          "most_recent": true
        },
      "instance_type": "t2.micro",
      "ssh_username": "ubuntu",
      "ami_name": "{{user `name`}} {{timestamp}}",
      "ami_description": "from {{.SourceAMI}}",
      "tags": {
        "OS_Version": "Ubuntu",
        "Release": "Latest",
        "Base_AMI_Name": "{{ .SourceAMIName }}",
        "Extra": "{{ .SourceAMITags.TagName }}"
      }
    }
  ],
  "provisioners": [
    {
        "type": "ansible",
        "playbook_file": "ansible/main.yml",
        "ansible_env_vars": [
          "ANSIBLE_HOST_KEY_CHECKING=False",
          "ANSIBLE_REMOTE_TMP=/tmp/ansible",
          "ANSIBLE_BECOME=true",
          "ANSIBLE_BECOME_USER=ubuntu",
          "ANSIBLE_BECOME_METHOD=sudo"
        ]
      } 
  ]
}