anchor.diff:  
   VOLUME /app_link
   
  -RUN npm install && mkdir -p uploads
  +RUN npm install && npm install -g nodemon && mkdir -p uploads
   
  -EXPOSE 80
  +EXPOSE 8000
   
  -CMD ["/start.sh"]+CMD ["/bin/sh", "-c", "/start.sh"]
positive.code: RUN echo "  fi" >> /start.sh
  RUN echo "  touch /app_link/coped" >> /start.sh
  RUN echo "fi" >> /start.sh
  RUN echo "ln -s /app_link/public ." >> /start.sh
  RUN echo "ln -s /app_link/uploads ." >> /start.sh
  RUN echo "/usr/bin/supervisord -n" >> /start.sh
  RUN chmod +x /start.sh
  
  ADD . /app
  
negative.code: RUN apt-get update
  RUN apt-get upgrade -y
  RUN apt-get install -y \
      nodejs \
      npm \
      sudo \
      mongodb-org
  
  RUN echo "if [ -d \"/app_link/run.sh\" ]; then"
  RUN echo "  ./app_link/run.sh"
  RUN echo "  rm -rf ./app_link/run.sh"
  RUN echo "fi"
  RUN echo "if [ ! -d \"/app_link/coped\" ]; then" >> /start.sh
  RUN echo "  if [ ! -d \"/app_link/public\" ]; then" >> /start.sh
  RUN echo "    mv /app/public /app_link" >> /start.sh
  RUN echo "    mkdir -p /app_link/uploads" >> /start.sh
  