Fetches image labels (repository / tags) from Docker.

        :return: A dictionary, with image name and tags as the key and the image id as value.
        :rtype: dict

def get_image_tags(self):
        """
        Fetches image labels (repository / tags) from Docker.

        :return: A dictionary, with image name and tags as the key and the image id as value.
        :rtype: dict
        """
        current_images = self.images()
        tags = {tag: i['Id'] for i in current_images for tag in i['RepoTags']}
        return tags