Use fabric API to execute subtasks in docker.clean

from __future__ import unicode_literals

from fabric.api import task, roles, env, local, run, lcd

from fabric.api import task, roles, env, local, run, lcd, execute

from fabric.colors import red, green

from fabric.contrib.console import confirm

            red('This will stop, remove container and delete docker image ' +

                'related to this project. Do you want to continue?'),

            default=False)):

        container_stop()

        container_remove()

        image_remove()

        execute(container_stop)

        execute(container_remove)

        execute(image_remove)

@task