packer.json

{
  "variables": {
    "cleanup_pause": "0",
    "headless": "false",
    "update": "true",
    "vagrant_user": "vagrant",
    "vagrant_home": "/home/vagrant"
  },
  "builders": [
    {
      "type": "virtualbox-iso",
      "vm_name": "centos7.0",
      "guest_os_type": "RedHat_64",
      "iso_checksum_type": "none",      
      "iso_url": "CentOS-7.0-1406-x86_64-Everything.iso",
      "ssh_username": "vagrant",
      "ssh_password": "vagrant",
      "ssh_wait_timeout": "50000s",
      "headless": "{{ user `headless` }}",
      "virtualbox_version_file": ".vbox_version",
      "vboxmanage": [
        [
          "modifyvm",
          "{{.Name}}",
          "--memory",
          "1024"
        ],
        [
          "modifyvm",
          "{{.Name}}",
          "--cpus",
          "1"
        ]
      ],
      "http_directory": "http",
      "boot_command": [
        "<tab> text ks=http://{{ .HTTPIP }}:{{ .HTTPPort }}/ks.cfg<enter>"
      ],
      "shutdown_command": "echo 'vagrant'|sudo -S shutdown -P now"
    }
  ],
  "provisioners": [
    {
    "type": "salt-masterless",
    "local_pillar_roots": "salt/roots/pillar",
    "local_state_tree": "salt/roots/salt",
    "minion_config": "salt/minion"
    },
    {
      "type": "shell",
      "environment_vars": [
        "UPDATE={{user `update`}}",
        "VAGRANT_USER={{user `vagrant_user`}}",
        "VAGRANT_HOME={{user `vagrant_home`}}",
        "CLEANUP_PAUSE={{user `cleanup_pause`}}"
      ],
      "scripts": [
        "script/update.sh",
        "script/sshd.sh",
        "script/vagrant.sh",
        "script/virtualbox.sh",
        "script/cleanup.sh"
      ],
      "execute_command": "echo 'vagrant' | {{.Vars}} sudo -E -S bash '{{.Path}}'"
    }
  ],
  "post-processors": [
    {
      "type": "vagrant",
      "compression_level": 9,
      "output": "vagrant/centos7.0.box"
    }
  ]
}