[KaiserPro]

> Only when your application depends on optimizing your database to the max.

Only when you don't need to store data for any length of time. The point of containers is that they don't store state. You have to manage that.

And for some cases you can get away with it. But for most websites, keeping a single container up for many years isn't a great strategy. (Yes, I know there are ways around this. but they are not as simple as "docker run postgres")