Show the details of an image

def show_image(kwargs, call=None):
    """
    Show the details of an image
    """
    if call != 'function':
        raise SaltCloudSystemExit(
            'The show_image action must be called with -f or --function.'
        )

    name = kwargs['image']
    log.info("Showing image %s", name)
    machine = vb_get_machine(name)

    ret = {
        machine["name"]: treat_machine_dict(machine)
    }
    del machine["name"]
    return ret