@quad @tk I think it adds a lot of stability, reproducibility, and security to a prod deployment.

For example, my Docker "master node" has like 3 or 4 networks that are isolated from each other, and allow services like MariaDB and such to talk to other servers. This way, all my databases are isolated from each other, and if a web service contains a vulnerability that allows the attacker to dump the databases, they won't see much from the other ones.