def cleanup_images(self):
        """
        Remove all images created by CONU and remove all hidden images (cached dowloads)

        :return: None
        """
        for image in self.list_images():
            if CONU_ARTIFACT_TAG in image.name:
                image.rmi()
        # remove all hidden images -> causes trouble when pulling the image again
        run_cmd(["machinectl", "--no-pager", "clean"])
Remove all images created by CONU and remove all hidden images (cached dowloads)

        :return: None