One of the biggest strengths for Vagrant is Chef (or Puppet if you prefer). Anything that requires "apt-get *" as part of your instructions after "vagrant up" and you're just doing it wrong.

Check your Vagrantfile and associated recipes into git. Then it's just "git clone; vagrant up"

The benefit of this is that you can share your stack by having someone else just git clone your stack. Rather than a blog post, we'd be looking at your chef recipe. I'd much prefer that.