anchor.diff:  
   # Clean up
   RUN rm /tmp/node-v${VERSION}-linux-x64.tar.gz
  -
  -# Mappings
  -EXPOSE 8080
  -VOLUME ["/workspace", "/data"]
  -
  -# Entry - force work with user "u01"
  -CMD su - u01
  
positive.code: RUN usermod -a -G sudo u01
  
  # Install NodeJS
  RUN \
      wget https://nodejs.org/dist/v${VERSION}/node-v${VERSION}-linux-x64.tar.gz -O /tmp/node-v${VERSION}-linux-x64.tar.gz; \
      mkdir -p /opt/nodejs; \
      tar xzvf /tmp/node-v${VERSION}-linux-x64.tar.gz -C /opt/nodejs
  RUN chown -Rv u01:u01 /opt/nodejs
  RUN export PATH=$PATH:/opt/nodejs/node-v${VERSION}-linux-x64/bin; npm config set prefix /data/global --global
  
negative.code: # The npm registry server
  ENV NPM_REG=https://registry.npm.taobao.org
  
  # Mappings
  EXPOSE 8080
  VOLUME ["/workspace", "/data"]
  
  # Entry - force work with user "u01"
  CMD su - u01
  
  ###############################################################################
  
  # Preparing installation and install basic tools
  ADD files /
  RUN apt-get update
  RUN \
      export DEBIAN_FRONTEND=noninteractive; \
      apt-get install -y --allow-unauthenticated sudo; \
      apt-get install -y --allow-unauthenticated wget;
  
  # Download nodejs
  RUN wget https://nodejs.org/dist/v${VERSION}/node-v${VERSION}-linux-x64.tar.gz -O /tmp/node-v${VERSION}-linux-x64.tar.gz;
  
  # Install necessary packages
  RUN \
      export DEBIAN_FRONTEND=noninteractive; \
      apt-get install -y --allow-unauthenticated net-tools; \
      apt-get install -y --allow-unauthenticated inetutils-ping; \
      apt-get install -y --allow-unauthenticated python; \
      apt-get install -y --allow-unauthenticated build-essential
  RUN \
      export DEBIAN_FRONTEND=noninteractive; \
      apt-get install -y --allow-unauthenticated telnet; \
      apt-get install -y --allow-unauthenticated nano
  
  # Add work user
  RUN useradd -mU -u 1000 -d /home/u01 -s /bin/bash u01
  