This Vagrantfile will create a new CentOS 7 box, install X11, Openbox, and Sublime Text, and link the config directory to the shared folder. The aim is to make it easy to package up your Sublime config on a clean VM ready for copying to a machine which may not have internet access.
List any packages to install in sublime-text-3/Packages/User/Package Control.sublime-settings and they'll be downloaded after enabling and restarting Package Control. You should then be able to copy the sublime-text-3 directory to any CentOS 7 host and be able to use all of the packages that were just pulled in. Moving the sublime-text-3 directory between operating systems probably won't work.