Merge pull request #673 from Kaggle/fix-wordbatch

Pin cesium to avoid scikit-learn downgrade

Author: rosbo

Dockerfile

@@ -457,7 +457,8 @@ RUN pip install flashtext && \
     pip install jieba  && \
     pip install git+https://github.com/SauceCat/PDPbox && \
     pip install ggplot && \
-    pip install cesium && \
+    # b/145856222 cesium 0.9.10 forces a downgrade of scikit-learn.
+    pip install cesium==0.9.9 && \
     pip install rgf_python && \
     # b/145404107: latest version force specific version of numpy and torch.
     pip install pytext-nlp==0.1.2 && \