packer.json

{
    "builders": [{
        "type": "virtualbox-iso",
        "guest_os_type": "RedHat_64",
        "iso_url": "./CentOS-6.5-x86_64-minimal.iso",
        "iso_checksum": "0d9dc37b5dd4befa1c440d2174e88a87",
        "iso_checksum_type": "md5",
        "ssh_username": "vagrant",
        "ssh_password": "vagrant",
        "ssh_wait_timeout": "600s",
        "vm_name": "centos65",
        "http_directory": "./",
        "boot_wait": "30s",
        "boot_command": [
            "<esc><wait>",
            "linux ks=http://{{.HTTPIP}}:{{.HTTPPort}}/ks.cfg",
            "<enter><wait>"
        ],
        "shutdown_command": "echo 'vagrant' | sudo -S shutdown -P now",
        "vboxmanage": [
            ["modifyvm", "{{.Name}}", "--memory", "512"],
            ["modifyvm", "{{.Name}}", "--usb", "off"],
            ["modifyvm", "{{.Name}}", "--audio", "none"]
        ]
    }],
    "provisioners": [{
        "type": "shell",
        "script": "provision.sh"
    }],
    "post-processors": [{
        "type": "vagrant",
        "output": "./centos65_{{.BuildName}}_{{.Provider}}.box",
        "vagrantfile_template": "./Vagrantfile"
    }]
}