Updated recreate_containers to attempt to base intermediate container's the previous container's image.

Added in additional functionality to reset any entrypoints for the intermediate container and pull/retry handling if the image does not exist.
Updated test coverage to check if an container is recreated with an entrypoint it is handled correctly.

fig/container.py

@@ -3,7 +3,7 @@ from __future__ import absolute_import
 
 class Container(object):
     """
-    Represents a Docker container, constructed from the output of 
+    Represents a Docker container, constructed from the output of
     GET /containers/:id:/json.
     """
     def __init__(self, client, dictionary, has_been_inspected=False):
@@ -38,6 +38,10 @@ class Container(object):
     def id(self):
         return self.dictionary['ID']
 
+    @property
+    def image(self):
+        return self.dictionary['Image']
+
     @property
     def short_id(self):
         return self.id[:10]