message: default NCCL_A2A=ON SM=\"70 80\" and add ENV PATH /usr/local/hugectr/bin:$PATH
diff: FROM nvidia/cuda:11.0-cudnn8-devel-ubuntu18.04-rc
  ARG CMAKE_BUILD_TYPE=Release
  -ARG SM=70
  +ARG SM="70;80"
  ARG VAL_MODE=OFF
  ARG ENABLE_MULTINODES=OFF
  -ARG NCCL_A2A=OFF
  +ARG NCCL_A2A=ON
  RUN apt-get update && \
  apt-get upgrade -y
  @@ -40,6 +40,6 @@ RUN git clone -b v2.2-integration https://gitlab-master.nvidia.com/zehuanw/hugec
  chmod +x /usr/local/hugectr/bin/* &&\
  rm -rf HugeCTR
  -RUN echo 'export PATH=/usr/local/hugectr/bin:$PATH' >>/etc/bash.bashrc
  +ENV PATH /usr/local/hugectr/bin:$PATH
  