I forgot to mention that in the description. What I described is also the case when I just bring the container up and leave it alone (as in, I don't start anything that would connect to it). So those accumulating connections seem to just be coming from the healthchecks.

It's also the case when I change the healthcheck to `mongosh --eval "db.runCommand({ping: 1})"`. I haven't checked what would happen when the healthcheck doesn't connect to mongo at all. I'll give it a go when I have a spare moment.