I setup an Ubuntu 13.04 box from www.vagrantbox.es. Post that I made changes to the box - installed ruby, rails, git, mysql, ngnix, etc. How do I share the modified box with someone else?
After making your changes, use vagrant package
in the directory with the Vagrantfile. It will shut the machine down and start saving it to a file.
You'll end up with a boxfile in that directory that you can share.