I want to set up a containerized szurubooru, and it requires a PostgreSQL (psql) database. I have a proxy server set up in docker that talks to a MySQL container, but it can ALSO use psql if I want it to. I don't intend on hosting a lot of database-driven services, maybe only the image board (or an alternative) and the proxy server (npm). Is it worth it to migrate everything over to just one containerized database service? Or should I just let szuru have its own?
On one hand, just having each service run its own database would be easier (and perhaps more secure, I don't exactly have the highest trust in szuru), but on the other hand, I'm running stuff on an old laptop and resources aren't completely unlimited (though they're still very high).

If nothing else it would be an interesting project learning Docker Compose to run two intermittent service stacks that depend on a third, common service stack.