Personally, I've run into weird issues sharing sockets and other files that need to be read+write on both containers. One thing is you have to set up the users

Personally, I've run into weird issues sharing sockets and other files that need to be read+write on both containers. One thing is you have to set up the users very carefully/similarly in both containers, due to file ownership issues with bind mounts (UIDs have to align in both containers). Agreed about not shoehorning things into containers. Redis, for instance, should be ran with custom kernel parameters (transparent huge pages disabled), so doesn't fit well in the container paradigm since containers share the same kernel.