debian-buster-virtualbox

{
  "variables": {
      "debian_version": "10.1.0"
  },
  "builders": [
    {
      "type": "virtualbox-iso",
      "guest_os_type": "Debian_64",
      "boot_wait": "10s",
      "boot_command": [
        "<esc><wait>",
        "install <wait>",
        "preseed/url=http://{{ .HTTPIP }}:{{ .HTTPPort }}/preseed.cfg <wait>",
        "debian-installer=en_US.UTF-8 <wait>",
        "auto <wait>",
        "language=en <wait>",
        "country=US <wait>",
        "locale=en_US.UTF-8 <wait>",
        "kbd-chooser/method=us <wait>",
        "keyboard-configuration/xkb-keymap=us <wait>",
        "netcfg/get_hostname={{ .Name }} <wait>",
        "netcfg/get_domain=example.com <wait>",
        "fb=false <wait>",
        "debconf/frontend=noninteractive <wait>",
        "console-setup/ask_detect=false <wait>",
        "console-keymaps-at/keymap=us <wait>",
	"grub-installer/bootdev=/dev/sda <wait>",
        "<enter><wait>"
      ],
      "disk_size": 5000,
      "headless": true,
      "http_directory": "http",
      "iso_checksum_type": "sha512",
      "iso_checksum_url": "http://cdimage.debian.org/cdimage/release/{{user `debian_version`}}/amd64/iso-cd/SHA512SUMS",
      "iso_url": "http://cdimage.debian.org/cdimage/release/{{user `debian_version`}}/amd64/iso-cd/debian-{{user `debian_version`}}-amd64-netinst.iso",
      "ssh_username": "debian",
      "ssh_password": "debian",
      "ssh_port": 22,
      "ssh_wait_timeout": "10000s",
      "shutdown_command": "echo debian | sudo -S /sbin/shutdown -hP now",
      "vm_name": "debian-{{user `debian_version`}}-amd64",
      "guest_additions_path": "VBoxGuestAdditions_{{.Version}}.iso",
      "virtualbox_version_file": ".vbox_version",
      "vboxmanage": [
        [ "modifyvm", "{{.Name}}", "--memory", "512" ],
        [ "modifyvm", "{{.Name}}", "--cpus", "1" ]
      ]
    }
  ],
  "post-processors": [
    {
      "type": "vagrant",
      "compression_level": "9",
      "output": "debian-{{user `debian_version`}}-amd64-{{.Provider}}.box",
      "keep_input_artifact": false,
      "only": ["virtualbox-iso"]
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "execute_command": "echo debian | {{.Vars}} sudo -E -S bash '{{.Path}}'",
      "scripts": "{{user `provision_scripts`}}",
      "only": ["virtualbox-iso"]
    }
  ]
}