Add docker.clean command

docker.py

@@ -2,6 +2,7 @@ from __future__ import unicode_literals
 
 from fabric.api import task, roles, env, local, run, lcd
 from fabric.colors import red, green
+from fabric.contrib.console import confirm
 
 import helpers as h
 
@@ -220,6 +221,21 @@ def image_remove():
             print(red('Docker image {}/drupal was not found'.format(env.project_name)))
 
 
+@task
+@roles('local')
+def clean():
+    """
+    Clean docker workspace
+    """
+    if (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()
+
+
 @task
 @roles('docker')
 def update_host():