tier/gte repository overview

The gte is a set of docker images that contain all the software components, configuration, and setup necessary to complete the InCommon Grouper Training course. Each docker image tag coincides with a particular course, exercise, step, and the overall gte version. More information about Grouper Training and the gte can be found on the Internet2 wiki: https://spaces.at.internet2.edu/display/Grouper/Grouper+Training+Environment⁠.