anchor.diff:  USER root
   
   # Base Tools
  -RUN apt-get -qq update && \
  +RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys F23C5A6CF475977595C89F51BA6932366A755776 && \
  +    echo "deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic main " | tee /etc/apt/sources.list.d/python3.7.list && \
  +    apt-get -qq update && \
       apt-get -qq -y --no-install-recommends install \
           openjdk-8-jdk \
           ant \
  -        python-pip \
  -        python-serial \
  +        python3.7 \
           bzip2 \
           srecord \
  +        rlwrap \
           && \
       apt-get -qq clean && \
       rm -rf /var/lib/apt/lists/* && \
  +    # Set python 3.7 as default
  +    update-alternatives --install /usr/bin/python python `which python3.7` 0 && \
  +    # Install pip
  +    curl https://bootstrap.pypa.io/get-pip.py | python3.7 && \
       mkdir -p /opt
   
   # Upgrade pip to latest version
   # Install IoT-Lab cli-tools and ssh-cli-tools
  -RUN pip -q install --upgrade pip
   RUN pip -q install setuptools && \
  -    pip install iotlabcli==2.5.4 && iotlabsshcli==0.2.3
  +    pip -q install pyserial && \
  +    pip -q install iotlabcli
   
   # Install ARM toolchain
   RUN wget -nv https://launchpad.net/gcc-arm-embedded/5.0/5-2015-q4-major/+download/gcc-arm-none-eabi-5_2-2015q4-20151219-linux.tar.bz2 && \
  
positive.code:         make \
          sudo \
          git \
          curl wget \
          uncrustify \
          netcat-openbsd \
  
negative.code:     chmod g+w /etc/passwd && \
      usermod -aG dialout,staff $USER && \
      chmod +x /sbin/tini && \
      # Configure user capabilities
      echo "# Add net administrator capability to 'user' user" >> /etc/security/capability.conf &&\
      echo "cap_net_admin            user" >> /etc/security/capability.conf && \
      echo "" >> /etc/pam.d/login && \
      echo "# Enable pam capabilities" >> /etc/pam.d/login && \
      echo "auth  required  pam_cap.so" >> /etc/pam.d/login && \
      echo "auth  required  pam_cap.so" >> /etc/pam.d/runuser && \
      # Create local configurations
      mkdir $WORK && \
      # Configure prompt
      echo 'PS1="\u@\h:\W$ "' >> ${HOME}/.bashrc && \
  