dotcloud/docker — pull request #7197 by SegFaultx64 (2014-07-23 19:41:04+00:00)
Title: Return error if bad `Content-Type`

There should be an error on `postContainersStart` if a bad `Content-Type` is submitted, just like for copying containers. This is should remove some frustration for people trying to write libraries to interact with the API.