Require docker-py 0.5 or later for insecure_registry kwarg

Signed-off-by: Jason Bernardino Alonso <[email protected]>

setup.py

@@ -31,7 +31,7 @@ install_requires = [
     'texttable >= 0.8.1, < 0.9',
     'websocket-client >= 0.11.0, < 0.12',
     'dockerpty >= 0.2.3, < 0.3',
-    'docker-py >= 0.3.2, < 0.6',
+    'docker-py >= 0.5, < 0.6',
     'six >= 1.3.0, < 2',
 ]