dotcloud/docker — pull request #5498 by tianon (2014-04-30 16:12:16+00:00)
Title: Update pkg/apparmor to provide a better error message when apparmor_parser cannot be found

Before: `no such file or directory` (no hints of what's actually missing)
After: `Error loading docker apparmor profile: exec: "/sbin/apparmor_parser": stat /sbin/apparmor_parser: no such file or directory ()` (clearly missing "apparmor_parser")