anchor.diff:          openjdk-8-jdk \
           openssh-client \
           pkg-config \
  +        ruby-full \
           software-properties-common \
  -        ruby-full \
           unzip \
  +        vim-tiny \
           wget \
           zip \
           zlib1g-dev > /dev/null && \
  
positive.code:         "platforms;android-19" \
          "platforms;android-18" \
          "platforms;android-17" \
          "platforms;android-16" > /dev/null && \
      echo "Installing platform tools " && \
      yes | "$ANDROID_HOME"/tools/bin/sdkmanager \
          "platform-tools" > /dev/null && \
      echo "Installing build tools " && \
      yes | "$ANDROID_HOME"/tools/bin/sdkmanager \
          "build-tools;29.0.3" "build-tools;29.0.2" \
          "build-tools;28.0.3" "build-tools;28.0.2" \
  
negative.code:     rm -rf /var/lib/apt/lists/ && \
      npm install --quiet -g npm > /dev/null && \
      npm install --quiet -g \
          bower \
          cordova \
          eslint \
          gulp \
          ionic \
          jshint \
          karma-cli \
          mocha \
          node-gyp \
          npm-check-updates \
          react-native-cli > /dev/null && \
      npm cache clean --force > /dev/null && \
      rm -rf /tmp/* /var/tmp/*
  