template.json

{
	"variables": {
			"iso_url": "http://mirror.bytemark.co.uk/archlinux/iso/2015.02.01/archlinux-2015.02.01-dual.iso",
			"iso_checksum": "7291baa71630a7603ef09e843b3b321e48024f9f",
			"iso_checksum_type": "sha1",

			"iperf_version": "3.0.11"
	},
	"builders": [
		{
			"type": "virtualbox-iso",
			"vboxmanage": [
				[ "modifyvm", "{{.Name}}", "--memory", "512" ],
				[ "modifyvm", "{{.Name}}", "--cpus",   "2" ],
				[ "modifyvm", "{{.Name}}", "--bioslogodisplaytime", "1" ]
			],
			"virtualbox_version_file": ".vbox_version",
			"vm_name": "archlinux-2015-02-01",
			"iso_url": "{{ user `iso_url` }}",
			"iso_checksum": "{{ user `iso_checksum` }}",
			"iso_checksum_type": "{{ user `iso_checksum_type` }}",
			"guest_os_type": "ArchLinux_64",
			"guest_additions_mode": "disable",
			"headless": true,
			"http_directory": ".",
			"boot_wait": "10s",
			"boot_command": [
				"<enter><wait5><wait5>",
				"<wait10><wait10>",
				"echo 'root:root' | chpasswd<enter>",
				"ssh-keygen -A<enter><wait>",
				"systemctl reenable sshd.service<enter>",
				"systemctl start sshd.service<enter>"
			],
			"disk_size": 1024,
			"hard_drive_interface": "sata",
			"ssh_port": 22,
			"ssh_username": "root",
			"ssh_password": "root",
			"shutdown_command": "systemctl poweroff"
		}
	],
	"provisioners": [
		{
			"type": "shell",
			"environment_vars": [
				"IPERF_VERSION=iperf-{{ user `iperf_version` }}"
			],
			"execute_command": "{{.Vars}} sh -x {{.Path}}",
			"scripts": [
				"scripts/10-disk.sh",
				"scripts/20-base.sh",
				"scripts/25-packages.sh",
				"scripts/30-bootstrap.sh",
				"scripts/90-cleanup.sh"
			]
		}
	],
	"post-processors": [
		{
			"type": "vagrant",
			"compression_level": "9",
			"output": "arch-iperf.box"
		}
	]
}