Fix running one-off containers with --x-networking by disabling linking to self.

docker create fails if networking and links are used together.

Signed-off-by: Daniel Nephin <dnephin@docker.com>

compose/service.py

@@ -539,6 +539,9 @@ class Service(object):
         return 1 if not numbers else max(numbers) + 1
 
     def _get_links(self, link_to_self):
+        if self.use_networking:
+            return []
+
         links = []
         for service, link_name in self.links:
             for container in service.containers():