anchor.diff:      rm -rf /var/lib/apt/lists/* && \
       gem install coveralls-lcov
   
  -# Setting alternatives to map gcc, g++ & gcov to gcc-8, g++-8 & gcov-8, and clang & clang++ to clang-6.0 & clang++-6.0
  +# Setting alternatives to map gcc, g++ & gcov to gcc-8, g++-8 & gcov-8, and clang & clang++ to clang-7 & clang++-7
   RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 60 --slave /usr/bin/g++ g++ /usr/bin/g++-8 && \
       update-alternatives --install /usr/bin/gcov gcov /usr/bin/gcov-8 60 && \
  -    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-6.0 60 --slave /usr/bin/clang++ clang++ /usr/bin/clang++-6.0
  +    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-7 60 --slave /usr/bin/clang++ clang++ /usr/bin/clang++-7
   
   # Installing the FBX SDK
   # The installation asks for software user agreement (send 'yes'), then afterwards if the README file should be opened (send 'n')
  
positive.code: FROM ubuntu:18.10
  
  # Updating packages' repo & installing only the needed packages:
  #   - GL & X11 as needed graphical dependencies
  
negative.code: RUN apt-get update && \
      apt-get install -y --no-install-recommends \
          libglew-dev libx11-dev libxcursor-dev libxrandr-dev libxinerama-dev \
          cmake make gcc-8 g++-8 clang-7 lcov \
          doxygen python-pydot python-pydot-ng \
          wget \
          xvfb \
  