message: Added install futures for backward compatibility
diff: @@ -50,6 +50,9 @@ RUN ${PYTHON} set-build-env.py -p ${TARGET_PLATFORM} -f /root/.mkl.bazelrc \
  # Pull the compiler flags we just wrote into root user's .bazelrc file
  RUN echo "import /root/.mkl.bazelrc" >>/root/.bazelrc
  +# Install futures>=0.17.1 for Python2.7 compatibility mode
  +RUN ${PIP} install future>=0.17.1
  +
  RUN bazel --bazelrc=/root/.bazelrc build -c opt \
  tensorflow/tools/pip_package:build_pip_package && \
  bazel-bin/tensorflow/tools/pip_package/build_pip_package "${WHL_DIR}" && \
  