raspbian-dnsmasq.json

{
  "builders": [
    {
      "type": "arm-image",
      "iso_url": "https://downloads.raspberrypi.org/raspbian_lite/images/raspbian_lite-2020-02-14/2020-02-13-raspbian-buster-lite.zip",
      "iso_checksum": "12ae6e17bf95b6ba83beca61e7394e7411b45eba7e6a520f434b0748ea7370e8",
      "target_image_size": 4294967296
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "inline": [
        "export DEBIAN_FRONTEND=noninteractive",
        "apt-get update -qq",
        "apt-get upgrade -qq -y",
        "mkdir /home/pi/.ssh"
      ]
    },
    {
      "type": "file",
      "source": "/host-machine-files/id_rsa.pub",
      "destination": "/home/pi/.ssh/authorized_keys"
    },
    {
      "type": "file",
      "source": "/host-machine-files/dnsmasq.conf",
      "destination": "/etc/dnsmasq.conf"
    },
    {
      "type": "shell",
      "inline": [
        "chmod 600 /home/pi/.ssh/authorized_keys",
        "chown pi /home/pi/.ssh/authorized_keys",
        "touch /boot/ssh",
        "echo > /etc/motd",
        "sed '/PasswordAuthentication/d' -i /etc/ssh/sshd_config",
        "echo >> /etc/ssh/sshd_config",
        "echo 'PasswordAuthentication no' >> /etc/ssh/sshd_config",
        "echo >> /etc/resolvconf.conf",
        "echo 'name_servers=127.0.0.1' >> /etc/resolvconf.conf",
        "apt-get -qq -y install dnsutils",
        "apt-get -qq -y install dnsmasq",
        "systemctl enable dnsmasq"
      ]
    }
  ]
}