message: update cmake in dockerfile
diff: @@ -7,12 +7,12 @@ FROM nvidia/cuda:10.2-cudnn7-devel-ubuntu18.04
  WORKDIR /root
  RUN apt update ; apt upgrade -y ; apt-get -y install build-essential git wget libboost-all-dev libeigen3-dev libgoogle-glog-dev libprotobuf-dev protobuf-compiler libhdf5-dev libatlas-base-dev python3-dev librdkit-dev python3-numpy python3-pip python3-pytest
  -# set up acceptable cmake version
  -RUN wget https://github.com/Kitware/CMake/releases/download/v3.16.5/cmake-3.16.5-Linux-x86_64.tar.gz; \
  - tar xzf cmake-3.16.5-Linux-x86_64.tar.gz; \
  - cp cmake-3.16.5-Linux-x86_64/bin/* /usr/local/bin; \
  - cp -r cmake-3.16.5-Linux-x86_64/share/cmake-3.16 /usr/local/share/
  +# set up acceptable cmake version
  +RUN wget https://github.com/Kitware/CMake/releases/download/v3.18.6/cmake-3.18.6-Linux-x86_64.tar.gz; \
  + tar xzf cmake-3.18.6-Linux-x86_64.tar.gz; \
  + cp cmake-3.18.6-Linux-x86_64/bin/* /usr/local/bin; \
  + cp -r cmake-3.18.6-Linux-x86_64/share/cmake-3.18 /usr/local/share/
  # build and install openbabel 3
  RUN git clone https://github.com/openbabel/openbabel.git; \
  