Why was doomsday created in batman v superman?

In the 2016 film Batman v. Superman: Dawn of Justice, the story concentrates on the conflict between Batman and Superman and the machinations of Lex Luthor. The character Doomsday is not shown or developed in this movie. Luthor is mentioned as having a plan that could involve Doomsday, but no explanation or depiction of the creature’s creation appears on screen. Therefore, the film provides no narrative about why Doomsday was created, and the audience learns only that the creature is a future menace hinted at rather than explained.