He's a sweeper keeper.
Anyways, I wouldn't go overboard like some other posters with the hope that DDG would have his starter position taken away though. This guy may be given chances in lower profile games, and cup games to help with building toward front foot football style by getting outfield players gaining practical experience playing with a sweeper keeper. However, that's just that.
Dubravka maybe decent and belong to the desired sweeper keeper profile, but he's not top class.
One of the infamous performance I can remember on the back of my head is this game.
After saving penalty, he then turned the game for Spain, and seen as weak in a couple other goals beside the infamous incident.