Portainer has so many tiny broken places that I effectively treat it only as a read-only view. It lists my containers and shows my logs and nothing much else.
It could in theory do quite a bit more, but starting from the fact that it doesn't quite do docker-compose, but its own thing that's somehow similar but different there's just too many tiny issues with it.
Also, it's quite aggressively pushing the paid option without a way to turn that off (or at least turn it down to tolerable levels).