hostname defaults to localhost

Author: rosbo

Dockerfile

@@ -49,8 +49,7 @@ RUN conda config --add channels conda-forge && \
     /tmp/clean-layer.sh
 
 # The anaconda base image includes outdated versions of these packages. Update them to include the latest version.
-RUN pip install distributed && \
-    pip install seaborn python-dateutil dask && \
+RUN pip install seaborn python-dateutil dask && \
     pip install pyyaml joblib pytagcloud husl geopy ml_metrics mne pyshp && \
     pip install pandas && \
     # Install h2o from source.

test

@@ -94,6 +94,9 @@ docker run --rm -t --read-only --net=none \
     -e KAGGLE_DATA_PROXY_URL=http://127.0.0.1:8000 \
     -e KAGGLE_DATA_PROXY_PROJECT=test \
     -e TF_FORCE_GPU_ALLOW_GROWTH=true \
+    # b/158137436: hostname defaults to the container name which fails DNS name
+    # resolution with --net=none (required to keep tests hermetic). See details in bug.
+    --hostname localhost \
     --shm-size=2g \
     -v $PWD:/input:ro -v /tmp/python-build/working:/working \
     -v /tmp/python-build/tmp:/tmp -v /tmp/python-build/devshm:/dev/shm \