Added forcerm param in Client.build

docker/client.py

@@ -408,7 +408,8 @@ class Client(requests.Session):
 
     def build(self, path=None, tag=None, quiet=False, fileobj=None,
               nocache=False, rm=False, stream=False, timeout=None,
-              custom_context=False, encoding=None, pull=True):
+              custom_context=False, encoding=None, pull=True,
+              forcerm=False):
         remote = context = headers = None
         if path is None and fileobj is None:
             raise TypeError("Either path or fileobj needs to be provided.")
@@ -442,6 +443,7 @@ class Client(requests.Session):
             'q': quiet,
             'nocache': nocache,
             'rm': rm,
+            'forcerm': forcerm,
             'pull': pull
         }
 

docs/api.md

@@ -59,6 +59,7 @@ build output as it happens
 * custom_context (bool): Optional if using `fileobj`
 * encoding (str): The encoding for a stream. Set to `gzip` for compressing
 * pull (bool): Downloads any updates to the FROM image in Dockerfiles
+* forcerm (bool): Always remove intermediate containers, even after unsuccessful builds
 
 **Returns** (generator): A generator of the build output