Dear @ryanerwin,
It’s great to read that you have found the underlying issue and now understand that Redis runs “in the container” and is not exposed (from a socket I/O perspective) outside the container (as set up OOTB).
Regarding using unix domain sockets and Redis, I think this is a great idea and have not set this up (yet), and nor have I read any write-up on how to set this up for Discourse, and so I would encourage you to continue to explore this option.
If I have time, I will research this further and try to set up Redis to use a unix domain docket in Discourse on a staging server. In the meantime, if you can work this out and post your results, that would be much appreciated. I’m sure many others are also interested in this interesting Redis topic.
Thanks.