anchor.diff:  RUN android-sdk-install "${ANDROID_SDK_INSTALL}"
   
   # install spoon for google console deploys
  +# https://github.com/fastlane/fastlane/tree/master/supply
   ENV SUPPLY_VERSION          0.6.2
   RUN gem install --no-ri --no-rdoc supply -v ${SUPPLY_VERSION}
   
  
positive.code: 
  # script to accept android license
  # https://github.com/journeyapps/android-sdk-installer
  COPY android-accept-licenses /usr/bin/android-accept-licenses
  # script to wait for android emulator
  # https://github.com/travis-ci/travis-cookbooks/blob/master/community-cookbooks/android-sdk/files/default/android-wait-for-emulator
  COPY android-wait-for-emulator /usr/bin/android-wait-for-emulator
  COPY android-sdk-install /usr/bin/android-sdk-install
  RUN chmod +x /usr/bin/android-accept-licenses \
      && chmod +x /usr/bin/android-sdk-install \
      && chmod +x /usr/bin/android-wait-for-emulator
  
negative.code:     && rm "node-v$NODE_VERSION-linux-x64.tar.gz"
  
  # install ionic dependencies
  ENV BOWER_VERSION           1.7.9
  ENV CORDOVA_VERSION         6.1.1
  ENV IONIC_VERSION           1.7.14
  ENV GULP_VERSION            1.2.1
  RUN npm install --global --quiet --production \
          bower@${BOWER_VERSION} \
          cordova@${CORDOVA_VERSION} \
          ionic@${IONIC_VERSION} \
          gulp-cli@${GULP_VERSION} \
  