message: Remove install of NCCL 2.x
  NCCL 2.x already exists in the base docker from NVIDIA.  Installing just the runtime for some reasons results in the header file being removed from /usr/include/nccl.h.
diff: @@ -15,10 +15,6 @@ RUN add-apt-repository -y ppa:openjdk-r/ppa && \
  add-apt-repository -y ppa:george-edison55/cmake-3.x
  RUN /install/install_deb_packages.sh
  -# Install NCCL
  -RUN apt-get update && apt-get install -y --no-install-recommends \
  - libnccl2=2.2.13-1+cuda9.0
  -
  RUN /install/install_pip_packages.sh
  RUN /install/install_bazel.sh
  RUN /install/install_golang.sh
  