docker-baked.json

{
  "builders": [{
    "type": "amazon-ebs",
    "region": "ap-northeast-1",
    "source_ami": "{{user `source_ami`}}",
    "instance_type": "t2.micro",
    "ssh_username": "ubuntu",
    "ami_name": "packer-ubuntu-xenial-docker-{{timestamp}}"
  }],
  "provisioners": [{
    "type": "shell",
    "inline": [
      "uname -a",
      "sudo apt-get update",
      "sudo apt-get --yes upgrade",
      "sudo apt-get install apt-transport-https ca-certificates -y",
      "sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D",
      "sudo bash -c 'echo deb https://apt.dockerproject.org/repo ubuntu-xenial main > /etc/apt/sources.list.d/docker.list'",
      "sudo apt-get update",
      "sudo apt-cache policy docker-engine",
      "sudo apt-get install docker-engine -y",
      "#sudo service docker start",
      "sudo docker info",
      "sudo docker run hello-world"
    ]
  }]
}