anchor.diff:  
   # Create Cooja shortcut and work directory
   RUN echo "#!/bin/bash\nant -Dbasedir=${COOJA} -f ${COOJA}/build.xml run" > ${HOME}/cooja && \
  -  chmod +x ${HOME}/cooja && \
  -  mkdir $WORK
  -
  -# Download, build and install Renode
  -RUN git clone --quiet https://github.com/renode/renode.git \
  -  && cd ${HOME}/renode \
  -  && git checkout v1.3 \
  -  && ./build.sh
  -ENV PATH="${HOME}/renode:${PATH}"
  -
  -# Dowload IoT-Lab boards support for contiki
  -RUN git clone https://github.com/iot-lab/openlab.git && \ 
  -        git clone --recursive https://github.com/iot-lab/contiki.git ${CONTIKI}
  -
  -# Upgrade contiki source
  -RUN cd ${CONTIKI} && \
  -        git config user.email "devel@niclabs.cl" && \
  -        git config user.name "NIC Labs Devel" && \
  -        git remote add contiki https://github.com/contiki-os/contiki.git && \
  -        git fetch contiki && \
  -        git merge --no-edit contiki/master
  +    chmod +x ${HOME}/cooja && \
  +    mkdir $WORK
   
   # Build cooja and fix all permissions
   RUN ANT_OPTS=-Dfile.encoding=utf8 ant -q -f ${COOJA}/build.xml jar && \
  -        fix-permissions $HOME
  +    fix-permissions ${COOJA}
   
   USER root
   
  
positive.code: # Container with development environment
  # Original: https://github.com/contiki-ng/contiki-ng/blob/develop/tools/docker/Dockerfile
  FROM 32bit/ubuntu:16.04
  
  LABEL maintainer="Felipe Lalanne <flalanne@niclabs.cl>"
  
  ENV DEBIAN_FRONTEND noninteractive
  ARG USER=user
  ARG UID=1000
  ARG GID=100
  
  # Tools
  RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF && \
    echo "deb http://download.mono-project.com/repo/ubuntu xenial main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list && \
    apt-get -qq update && \
    apt-get -qq -y --no-install-recommends install \
      ant \
      build-essential \
      default-jdk \
      doxygen \
      gdb \
      git \
      gksu \
      gtk-sharp2 \
      iputils-tracepath \
      libcanberra-gtk-module:i386 \
      libgtk2.0-0 \
      libncurses-dev \
      mono-complete \
      mosquitto \
      mosquitto-clients \
      npm \
      python-pip \
      python-serial \
      rlwrap \
      screen \
      srecord \
      uml-utilities \
      unzip \
      wget \
      curl \
      > /dev/null \
    && apt-get -qq clean && \
    rm -rf /var/lib/apt/lists/*
  
  # Install coap-cli
  RUN npm -q install coap-cli -g \
    && sudo ln -s /usr/bin/nodejs /usr/bin/node
  
  # 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 && \
    tar xjf gcc-arm-none-eabi-5_2-2015q4-20151219-linux.tar.bz2 -C /tmp/ && \
    cp -f -r /tmp/gcc-arm-none-eabi-5_2-2015q4/* /usr/local/ && \
    rm -rf /tmp/gcc-arm-none-eabi-* gcc-arm-none-eabi-*-linux.tar.bz2
  
  # Install msp430 toolchain
  RUN wget -nv http://simonduq.github.io/resources/mspgcc-4.7.2-compiled.tar.bz2 && \
    tar xjf mspgcc*.tar.bz2 -C /tmp/ && \
    cp -f -r /tmp/msp430/* /usr/local/ && \
    rm -rf /tmp/msp430 mspgcc*.tar.bz2
  
  # Install NXP toolchain (partial, with binaries excluded. Download from nxp.com)
  RUN wget -nv http://simonduq.github.io/resources/ba-elf-gcc-4.7.4-part1.tar.bz2 && \
    wget -nv http://simonduq.github.io/resources/ba-elf-gcc-4.7.4-part2.tar.bz2 && \
    wget -nv http://simonduq.github.io/resources/jn516x-sdk-4163-1416.tar.bz2 && \
    mkdir /tmp/jn516x-sdk /tmp/ba-elf-gcc && \
    tar xjf jn516x-sdk-*.tar.bz2 -C /tmp/jn516x-sdk && \
    tar xjf ba-elf-gcc-*part1.tar.bz2 -C /tmp/ba-elf-gcc && \
    tar xjf ba-elf-gcc-*part2.tar.bz2 -C /tmp/ba-elf-gcc && \
    cp -f -r /tmp/jn516x-sdk /usr/ && \
    cp -f -r /tmp/ba-elf-gcc /usr/ && \
    rm -rf jn516x*.bz2 ba-elf-gcc*.bz2 /tmp/ba-elf-gcc* /tmp/jn516x-sdk*
  
  ENV PATH="/usr/ba-elf-gcc/bin:${PATH}"
  
  ## Install nRF52 SDK
  RUN wget -nv https://developer.nordicsemi.com/nRF5_IoT_SDK/nRF5_IoT_SDK_v0.9.x/nrf5_iot_sdk_3288530.zip && \
      mkdir /usr/nrf52-sdk && \
      unzip -q nrf5_iot_sdk_3288530.zip -d /usr/nrf52-sdk && \
      rm nrf5_iot_sdk_3288530.zip
  
  ENV NRF52_SDK_ROOT /usr/nrf52-sdk
  
  # 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
  
  # Add a script that we will use to correct permissions after running certain commands
  ADD fix-permissions /usr/local/bin/
  
negative.code:     chmod 0440 /etc/sudoers && \
      chmod g+w /etc/passwd && \
      usermod -aG dialout $USER && \
      # Move contiki and openlab directories to /home/user
      mv /opt/openlab ${OPENLAB} && \
      mv /opt/contiki ${CONTIKI} && \
      chown -R $USER ${OPENLAB} && \
      chown -R $USER ${CONTIKI} && \
      fix-permissions $HOME
  
  # Set user and workdir for what comes next
  