Packer templates for building base VM boxes.
Download the latest packer from http://www.packer.io/downloads.html and unzip the appropriate directory.
If you're using Homebrew
$ brew tap homebrew/binary
$ brew install packer
$ git clone git@github.com:superleap/packer-templates.git
$ cd centos-7
$ packer build template.json
If you want to build only virtualbox.
$ packer build -only=virtualbox-iso template.json
This templates was tested using a packer 0.10.0