anchor.diff:  && rm -rf $PYENV_ROOT/sources/* \
              && find $PYENV_ROOT -type d -name '.git' | xargs rm -rf \
              && rm -rf $PYENV_ROOT/versions/$PYENV_VERSION/lib/*/test/
  -ENV PATH "${QTDIR}/5.12.3/gcc_64/bin:/usr/lib/ccache:${PATH}"
  +ENV PATH "${QTBIN}:/usr/lib/ccache:${PATH}"
   ENV PATH "$PYENV_ROOT/bin:$PATH"
   
   RUN echo 'eval "$(pyenv init -)"' >> /root/.bashrc \
   && echo 'eval "$(pyenv virtualenv-init -)"' >> /root/.bashrc \
  -&& echo 'PKG_CONFIG_PATH=$(python3-config --prefix)/lib/pkgconfig' >> /root/.bashrc \
  +&& echo 'export PKG_CONFIG_PATH=$(python3-config --prefix)/lib/pkgconfig' >> /root/.bashrc \
   && bash -ic 'python -m pip install --upgrade pip codecov'
   
   RUN echo Internal image disk usage: $(du -sch /* 2>/dev/null | sort -h)
  
positive.code: RUN /tmp/install_qt.sh $QTDIR --verbose --platform minimal \
  # Cleanup once again
      && rm -rf /tmp/* \
      && rm -rf $QTDIR/Docs $QTDIR/Examples $QTDIR/Tools/QtCreator
  
  
  ENV PYENV_VERSION 3.5.6
  
negative.code:     && add-apt-repository -y ppa:ubuntu-toolchain-r/test \
      && apt-get update && apt -y upgrade \
      && apt-get install -y --no-install-recommends \
  		    wget curl rsync build-essential g++ \
  		    pkg-config libboost-system-dev libboost-wave-dev \
                  tcl vera++ xvfb mesa-common-dev libgl1-mesa-dri \
  		libglu1-mesa-dev libpng-dev \
  		zlib1g-dev xbitmaps xterm git-core ccache \
  #for TRIK Studio build
                  libusb-1.0-0-dev dbus \
  #for pyenv/PythonQt
                  libssl-dev realpath \
  #Cleanup after installation
      && apt-get purge -y software-properties-common python python3 libpython2.7 \
      && apt-get autoremove -y \
  