content: # Install Horovod
  ARG HOROVOD_WITHOUT_PYTORCH=1
  ARG HOROVOD_WITHOUT_MXNET=1
  ARG HOROVOD_WITH_TENSORFLOW=1
  ARG HOROVOD_VERSION=v0.21.1
  
  RUN apt-get update && apt-get install -y --no-install-recommends --fix-missing \
      build-essential \
      cmake \
      g++-8 \
      gcc-8 \
      git \
      ${PYTHON}-dev
  
  RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 700 --slave /usr/bin/g++ g++ /usr/bin/g++-7 && \
      update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 800 --slave /usr/bin/g++ g++ /usr/bin/g++-8
  
  RUN ${PYTHON} -m pip install git+https://github.com/horovod/horovod.git@${HOROVOD_VERSION}
  