packer.json

{
    "variables": {
        "api_key": "{{ env `DIGITAL_OCEAN_API_TOKEN` }}"
    },
    "builders": [
        {
          "type": "digitalocean",
          "api_token": "{{ user `api_key` }}",
          "image": "ubuntu-16-04-x64",
          "region": "sfo2",
          "size": "512mb",
          "ssh_username": "root",
          "snapshot_name": "buildkite-{{ timestamp }}"
        }
    ],
    "provisioners": [
        {
            "type": "shell",
            "scripts": [
                "{{pwd}}/scripts/base.sh",
                "{{pwd}}/scripts/docker.sh",
                "{{pwd}}/scripts/docker-tcp.sh",
                "{{pwd}}/scripts/buildkite.sh",
                "{{pwd}}/scripts/ansible.sh",
                "{{pwd}}/scripts/digitalocean.sh",
                "{{pwd}}/scripts/hugo.sh",
                "{{pwd}}/scripts/promtool.sh",
                "{{pwd}}/scripts/java.sh",
                "{{pwd}}/scripts/sbt.sh",
                "{{pwd}}/scripts/nodejs.sh"
            ]
        },
        {
            "type": "ansible-local",
            "playbook_file": "local.yml",
            "clean_staging_directory": true
        },
        {
          "type": "shell",
          "inline": [
            "usermod -aG docker buildkite-agent"
          ]
        }
    ]
}