github.com/endocode/docker@v1.4.2-0.20160113120958-46eb4700391e/contrib/README (about)

     1  The `contrib` directory contains scripts, images, and other helpful things
     2  which are not part of the core docker distribution. Please note that they
     3  could be out of date, since they do not receive the same attention as the
     4  rest of the repository.