anchor.diff:      wget \
       zlib1g-dev \
       && apt-get -y autoremove && apt-get clean autoclean && \
  -    rm -rf /var/cache/apt/archives/* \
  +    rm -rf /var/cache/apt/archives/* && \
       rm -rf /var/lib/{apt,dpkg,cache,log}/
   
   RUN update-alternatives --install /usr/bin/clang clang /usr/bin/clang-3.6 100 && \
  
positive.code: ENV LANGUAGE=en_US.UTF-8
  ENV LANG=en_US.UTF-8
  ENV LC_ALL=en_US.UTF-8
  
  RUN locale-gen en_US.UTF-8 && \
      update-locale LANG=en_US.UTF-8 && \
  
negative.code:     echo LC_MESSAGES=POSIX    >> /etc/default/locale && \
      echo LC_ALL=en_US.UTF-8   >> /etc/environment && \
      echo LANGUAGE=en_US.UTF-8 >> /etc/environment
  
  # Erlang and elixir repositories
  RUN wget https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb && \
  