So Redis is a Thing....

Creating Dockerfiles for `base_redis` and `redis_master`

# Base Redis

This will install a new-ish version of redis from `ppa:chris-lea/redis-server`. It is intended to be used as a base image for the master and slave dockerfiles.

# Redis Master

This is the standard redis image definition. It acts as a primary redis server. I've held off on implementing a slave image until it's needed.

See the README files of each image for more details