flynn/slugbuilder — pull request #26 by tommyvn (2014-06-17 12:54:10+00:00)
Title: Set the default working dir to /app

I'm seeing permission denied failures with buildpacks, specifically https://github.com/heroku/heroku-buildpack-scala.git, because we don't start the build in /app where the slugbuilder user has write permissions.
This fixes that.

Signed-off-by: Tom van Neerijnen