{
  "builders": [
    {
      "accelerator": "{{user `accelerator`}}",
      "boot_command": [
        "{{user `username`}}<enter>",
        "passwd<enter>{{user `password`}}<enter>{{user `password`}}<enter>",
        "ifconfig eth0 up \u0026\u0026 udhcpc -i eth0<enter>",
        "apk add --repository http://dl-cdn.alpinelinux.org/alpine/v{{user `alpine_version`}}/main dropbear dropbear-openrc openssh-sftp-server<enter>",
        "rc-update add dropbear<enter>",
        "echo -e 'auto eth0\\niface eth0 inet dhcp' > /etc/network/interfaces<enter>",
        "rc-service dropbear start<enter>",
        "<wait>"
      ],
      "boot_wait": "{{user `boot_wait`}}",
      "disk_interface": "virtio",
      "disk_size": "{{user `iso_size`}}",
      "format": "raw",
      "headless": true,
      "host_port_max": "{{user `ssh_port_max`}}",
      "host_port_min": "{{user `ssh_port_min`}}",
      "iso_checksum": "file:http://dl-cdn.alpinelinux.org/alpine/v{{user `alpine_version`}}/releases/{{user `alpine_arch`}}/alpine-virt-{{user `alpine_release`}}-{{user `alpine_arch`}}.iso.sha256",
      "iso_url": "http://dl-cdn.alpinelinux.org/alpine/v{{user `alpine_version`}}/releases/{{user `alpine_arch`}}/alpine-virt-{{user `alpine_release`}}-{{user `alpine_arch`}}.iso",
      "net_device": "virtio-net",
      "output_directory": "{{user `output`}}",
      "qemuargs": [
        [
          "-device",
          "virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x7"
        ],
        [
          "-object",
          "rng-random,filename=/dev/urandom,id=rng0"
        ]
      ],
      "shutdown_command": "/sbin/poweroff",
      "ssh_file_transfer_method": "sftp",
      "ssh_password": "{{user `password`}}",
      "ssh_port": 22,
      "ssh_timeout": "{{user `ssh_wait_timeout`}}",
      "ssh_username": "{{user `username`}}",
      "type": "qemu",
      "vm_name": "{{user `iso_name`}}.iso",
      "vnc_bind_address": "{{user `vnc_bind_address`}}",
      "vnc_port_max": "{{user `vnc_port_max`}}",
      "vnc_port_min": "{{user `vnc_port_min`}}"
    }
  ],
  "provisioners": [
    {
      "environment_vars": [
        "ALPINE_VERSION={{user `alpine_version`}}",
        "HOSTNAME={{user `hostname`}}"
      ],
      "script": "packer/alpine/setup.sh",
      "type": "shell"
    },
    {
      "expect_disconnect": true,
      "inline": [
        "/usr/bin/eject -s",
        "/sbin/reboot"
      ],
      "type": "shell"
    },
    {
      "extra_arguments": [
        "--extra-vars",
        "{{user `ansible_extra_vars`}}",
        "{{user `ansible_verbose`}}"
      ],
      "inventory_directory": "ansible/inventories",
      "pause_before": "16s",
      "playbook_file": "ansible/playbook.yml",
      "sftp_command": "/usr/lib/ssh/sftp-server -e",
      "type": "ansible",
      "user": "{{user `ansible_user`}}"
    }
  ],
  "variables": {
    "accelerator": "kvm",
    "alpine_arch": "x86_64",
    "alpine_release": "3.12.0",
    "alpine_version": "3.12",
    "ansible_extra_vars": "target=default",
    "ansible_user": "root",
    "ansible_verbose": "-v",
    "boot_wait": "8s",
    "hostname": "alpine",
    "iso_name": "alpine-3.12.0-x86_64",
    "iso_size": "1024",
    "output": "build/iso",
    "password": "alpine",
    "qemuargs": "",
    "ssh_port_max": "2222",
    "ssh_port_min": "2222",
    "ssh_wait_timeout": "32s",
    "template": "alpine",
    "username": "root",
    "vnc_bind_address": "127.0.0.1",
    "vnc_port_max": "5900",
    "vnc_port_min": "5900"
  }
}