The Gulp extension automatically sets up your Chassis instance to be able to use Gulp inside your Chassis box.
# In your Chassis dir:
git clone --recursive https://github.com/Chassis/gulp.git extensions/gulp
Then you'll need to reprovision
cd ..
vagrant provision
Alternatively you can add the extension to one of your yaml config files. e.g.
# Extensions
#
# Install a list of extensions automatically
extensions:
- chassis/gulp
Then you'll need to reprovision
vagrant provision
Gulp has now been installed inside your Chassis box.