anchor.diff:  
   # Install Robot Framework and Selenium Library
   RUN pip install \
  +  --no-cache-dir \
     robotframework==$ROBOT_FRAMEWORK_VERSION \
     robotframework-faker==$FAKER_VERSION \
     robotframework-pabot==$PABOT_VERSION \
     robotframework-requests==$REQUESTS_VERSION \
  -  robotframework-seleniumlibrary==$SELENIUM_LIBRARY_VERSION
  +  robotframework-seleniumlibrary==$SELENIUM_LIBRARY_VERSION \
  +  robotframework-databaselibrary==$DATABASE_LIBRARY_VERSION \
  +  robotframework-sshlibrary==$SSH_LIBRARY_VERSION \
  +  robotframework-ftplibrary==$FTP_LIBRARY_VERSION
   
   # Download Gecko drivers directly from the GitHub repository
   RUN wget -q "https://github.com/mozilla/geckodriver/releases/download/$GECKO_DRIVER_VERSION/geckodriver-$GECKO_DRIVER_VERSION-linux64.tar.gz" \
  
positive.code: FROM fedora:29
  
  MAINTAINER Paul Podgorsek <ppodgorsek@users.noreply.github.com>
  LABEL description Robot Framework in Docker.
  
negative.code: ENV FIREFOX_VERSION 66.0*
  ENV GECKO_DRIVER_VERSION v0.22.0
  ENV PABOT_VERSION 0.53
  ENV PYTHON_PIP_VERSION 19.0*
  ENV REQUESTS_VERSION 0.5.0
  ENV ROBOT_FRAMEWORK_VERSION 3.1.1
  ENV SELENIUM_LIBRARY_VERSION 3.3.1
  ENV XVFB_VERSION 1.20.*
  ENV DATABASE_LIBRARY_VERSION 1.2
  ENV SSH_LIBRARY_VERSION 3.3.0
  ENV FTP_LIBRARY_VERSION 1.6
  
  # Install system dependencies
  RUN dnf upgrade -y \
  