anchor.diff:  RUN sdkmanager "build-tools;23.0.1"
   RUN sdkmanager "build-tools;22.0.1"
   RUN sdkmanager "build-tools;21.1.2"
  -RUN sdkmanager "build-tools;20.0.0"
   RUN sdkmanager "build-tools;19.1.0"
   
   # Extras
  
positive.code: RUN sdkmanager "platforms;android-23"
  RUN sdkmanager "platforms;android-22"
  RUN sdkmanager "platforms;android-21"
  RUN sdkmanager "platforms;android-20"
  RUN sdkmanager "platforms;android-19"
  RUN sdkmanager "platforms;android-18"
  #RUN sdkmanager "platforms;android-17"
  
negative.code: 
  # Cleanup
  RUN apt-get clean -y && apt-get autoremove -y
  RUN rm -fr /var/lib/apt/lists/* /tmp/* /var/tmp/* /var/cache/*
  
  # Go to workspace
  RUN mkdir -p /var/workspace
  