{
    "variables": {
        "ssh_name": "kappataumu",
        "ssh_pass": "kappataumu",
        "hostname": "packer-test"
    },

    "builders": [{
        "type": "virtualbox-iso",
        "guest_os_type": "Ubuntu_64",

        "vboxmanage": [
            ["modifyvm", "{{.Name}}", "--vram", "32"]
        ],

        "disk_size" : 10000,

        "iso_url": "http://ftp.free.fr/mirrors/cdimage.debian.org/debian-cd/8.2.0/amd64/iso-cd/debian-8.2.0-amd64-netinst.iso",
        "iso_checksum_type": "sha1",
        "iso_checksum": "a41801dcc0e37bce2406e18b334f99ae366d6fde",
        "http_directory" : "ubuntu_64",
        "http_port_min" : 9001,
        "http_port_max" : 9001,

        "ssh_username": "{{user `ssh_name`}}",
        "ssh_password": "{{user `ssh_pass`}}",
        "ssh_wait_timeout": "20m",

        "shutdown_command": "echo {{user `ssh_pass`}} | sudo -S shutdown -P now",

        "boot_command" : 
        [
        "<esc><wait>",
        "auto ",
        "preseed/url=http://192.168.52.152:8000/preseed.cfg ",
        "<enter>"
        ]

    }]
}