gordlea/postgis repository overview

This image is deprecated, since the [pmdillon/postgis] image for postgis 2.2 is here. Use that instead, because this will get no updates ever.

Based off of the official postgres image.

This is a temporary project to hold me over until pmdillon/postgis⁠ gets postgis 2.2 (which in turn is waiting on debian to get it see issue #8⁠ ).