for one - it’s an infinite warehouse, so the parts of it that are near stars, black holes, planets, moons and comets are destroyed, sucked in etc, creating several stable “rare-Earth” conditions at the Goldilocks distance from heat sources, and using the debris from collision follows the same basic principle of how life on Earth started, but with melted plastic from the burned cds instead of in water. Life - uh - finds a way.