packer-template.json

{
  "builders": [
    {
      "type": "amazon-ebs",
      "ssh_pty": "true",
      "region": "ap-northeast-1",
      "source_ami_filter": {
        "filters": {
          "architecture": "x86_64",
          "name": "amzn-ami-hvm-*.0.20*-ebs,amzn-ami-hvm-*.1.20*-ebs,amzn-ami-hvm-*.2.20*-ebs,amzn-ami-hvm-*.3.20*-ebs,amzn-ami-hvm-*.4.20*-ebs,amzn-ami-hvm-*.5.20*-ebs,amzn-ami-hvm-*.6.20*-ebs,amzn-ami-hvm-*.7.20*-ebs,amzn-ami-hvm-*.8.20*-ebs,amzn-ami-hvm-*.9.20*-ebs",
          "root-device-type": "ebs",
          "virtualization-type": "hvm"
        },
        "most_recent": true
      },
      "instance_type": "m4.large",
      "ssh_username": "ec2-user",
      "ssh_timeout": "5m"
    }
  ]
}