Error running ros in docker conatiner

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Hi

I am getting the following error when the simulator connects with the ros server. The roslaunch is successful. -

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/engineio/server.py", line 505, in _trigger_event
    return self.handlers[event](*args)
  File "/usr/local/lib/python2.7/dist-packages/socketio/server.py", line 509, in _handle_eio_message
    self._handle_event(sid, pkt.namespace, pkt.id, pkt.data)
  File "/usr/local/lib/python2.7/dist-packages/socketio/server.py", line 448, in _handle_event
    self._handle_event_internal(self, sid, data, namespace, id)
  File "/usr/local/lib/python2.7/dist-packages/socketio/server.py", line 451, in _handle_event_internal
    r = server._trigger_event(data[0], namespace, sid, *data[1:])
  File "/usr/local/lib/python2.7/dist-packages/socketio/server.py", line 480, in _trigger_event
    return self.handlers[namespace][event](*args)
  File "/capstone/ros/src/styx/server.py", line 44, in control
    bridge.publish_controls(data)
  File "/capstone/ros/src/styx/bridge.py", line 145, in publish_controls
    self.publishers['steering_report'].publish(self.create_steer(steering))
  File "/capstone/ros/src/styx/bridge.py", line 102, in create_steer
    st.steering_wheel_angle_cmd = val * math.pi/180.
AttributeError: 'SteeringReport' object has no attribute 'steering_wheel_angle_cmd'

Dockerfile

I am trying to run this app in a docker container. The are the steps I followed -

git clone https://github.com/udacity/CarND-Capstone
cd CarND-Capstone
docker build . -t capstone
docker run -p 4567:4567 -v $PWD:/capstone -v /tmp/log:/root/.ros/ --rm -it capstone

from inside the container, I run the following commands

cd /capstone/ros
catkin_make
source devel/setup.sh
roslaunch launch/styx.launch

I was able to verify that the dbw_mkz_msgs package is available on the conatiner at /opt/ros/kinetic/share path. When the same code is run on VirtiualBox I do not get this error. It could be the way docker sources ENV variables. Any help with this will be greatly appreciated.