anchor.diff:          lrzsz \
           net-tools \
           iputils-ping \
  +        cron \
           vim
   
   # 切换下面执行的目录
  
positive.code: # ADD https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz Python-3.6.2.tgz
  COPY Python-3.6.2.tgz Python-3.6.2.tgz
  
  # 执行个性化配置的安装
  COPY zshrc.sh zshrc.sh
  RUN cp zshrc.sh .zshrc
  RUN rm zshrc.sh
  
negative.code: COPY init.sh init.sh 
  RUN bash init.sh
  RUN rm init.sh
  # 时区  Asia/Shanghai
  ENV TZ=Asia/Shanghai
  RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
  
  #################################################
  # 配置sshd环境
  