anchor.diff:  COPY bin/chromedriver.sh /opt/robotframework/bin/chromedriver
   COPY bin/chromium-browser.sh /opt/robotframework/bin/chromium-browser
   COPY bin/run-tests-in-virtual-screen.sh /opt/robotframework/bin/
  -
  -RUN addgroup -S robot \
  -  && adduser -S robot -G robot
   
   # Install system dependencies
   RUN echo "http://dl-cdn.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories \
  
positive.code:     && mv geckodriver /opt/robotframework/drivers/geckodriver \
      && rm geckodriver-$GECKO_DRIVER_VERSION-linux64.tar.gz \
  
    && apk del --no-cache --update-cache .build-deps \
    && mkdir -p ${ROBOT_REPORTS_DIR} \
    && chown robot:robot /var/log \
    && chown robot:robot /opt/robotframework \
    && chown robot:robot ${ROBOT_REPORTS_DIR}
  
  # Set up a volume for the generated reports
  VOLUME ${ROBOT_REPORTS_DIR}
  
  # Update system path
  ENV PATH=/opt/robotframework/bin:/opt/robotframework/drivers:$PATH
  
  USER robot
  WORKDIR /home/robot
  
  # Execute all robot tests
  CMD ["run-tests-in-virtual-screen.sh"]
  
negative.code: # Set the tests directory environment variable
  # By default, the directory is /opt/robotframework/tests
  ENV ROBOT_TESTS_DIR /opt/robotframework/tests
  
  # Set up a volume for the generated reports
  VOLUME ${ROBOT_REPORTS_DIR}
  
  # Setup X Window Virtual Framebuffer
  ENV SCREEN_COLOUR_DEPTH 24
  