def METHOD_NAME(self):
    """ Authenticate to registries
    Input schema
    input_registry:
        registry: docker.io
        account: bitnami
    """
    input_registry_url = self.config_dict.get(
        "input_registry", {}).get("registry")
    output_registry_url = os.environ.get(
        "RAPIDFORT_OUTPUT_REGISTRY", "docker.io")
    input_registry_helper = RegistryHelperFactory.get_registry_helper(
        self.docker_client, input_registry_url)
    output_registry_helper = RegistryHelperFactory.get_registry_helper(
        self.docker_client, output_registry_url)
    # authenticate to input and output registries
    input_registry_helper.auth()
    output_registry_helper.auth()
    return input_registry_helper, input_registry_helper