docker-python: Vowpal Wabbit failing import

import vowpalwabbit # nothing happens

from vowpalwabbit import pyvw  #fails
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-10-76d9c58cae1b> in <module>()
----> 1 from vowpalwabbit import pyvw

/opt/conda/lib/python3.6/site-packages/vowpalwabbit/pyvw.py in <module>()
      1 from __future__ import division
----> 2 import pylibvw
      3 
      4 
      5 class SearchTask():

ImportError: dynamic module does not define module export function (PyInit_pylibvw)

from vowpalwabbit.sklearn_vw import VWClassifier # fails
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-11-14a6a5c77f64> in <module>()
----> 1 from vowpalwabbit.sklearn_vw import VWClassifier

/opt/conda/lib/python3.6/site-packages/vowpalwabbit/sklearn_vw.py in <module>()
     16 from sklearn.utils.validation import check_is_fitted
     17 from sklearn.externals import joblib
---> 18 from vowpalwabbit import pyvw
     19 
     20 

/opt/conda/lib/python3.6/site-packages/vowpalwabbit/pyvw.py in <module>()
      1 from __future__ import division
----> 2 import pylibvw
      3 
      4 
      5 class SearchTask():

ImportError: dynamic module does not define module export function (PyInit_pylibvw)