anchor.diff:  # Yarn support
   RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -  && \
       echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list  && \
  -    apt-get update && apt-get install yarn
  +    rm -r /var/lib/apt/lists/* && apt-get update && apt-get install yarn
   
   # Resolve the issue might caused by node-sass installation issue
   ADD linux-x64-83_binding.node /opt/linux-x64-83_binding.node
  
positive.code: # https://help.ubuntu.com/community/ImageMagick
  RUN apt-get install --assume-yes imagemagick
  
  # Install vips
  RUN apt-get install -y libvips-dev
  
  # zh-cn locales
  
negative.code: # Install libgeos-dev for GEOS support in RGeo gem
  RUN apt-get install --assume-yes libgeos-dev libproj-dev
  RUN ln -s /usr/lib/x86_64-linux-gnu/libgeos-3.6.2.so /usr/lib/x86_64-linux-gnu/libgeos.so
  
  # timezone
  #RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
  