anchor.diff:  # ================================================================
   
   ENV GRADLE_VERSION 2.6
  -RUN curl -L -O "http://services.gradle.org/distributions/gradle-$GRADLE_VERSION-all.zip"
  -RUN unzip -o "gradle-$GRADLE_VERSION-all.zip"
  -RUN mv "gradle-$GRADLE_VERSION" "/usr/local/gradle-$GRADLE_VERSION"
  -RUN rm gradle-$GRADLE_VERSION-all.zip
  +RUN curl -L -O "http://services.gradle.org/distributions/gradle-$GRADLE_VERSION-all.zip" \
  +    && unzip -o "gradle-$GRADLE_VERSION-all.zip" \
  +    && mv "gradle-$GRADLE_VERSION" "/usr/local/gradle-$GRADLE_VERSION" \
  +    && rm gradle-$GRADLE_VERSION-all.zip
   
   ENV GRADLE_HOME "/usr/local/gradle-$GRADLE_VERSION"
   ENV PATH $PATH:$GRADLE_HOME/bin
  
positive.code: 
  ENV ANDROID_SDK_REVISION 24.3.4
  
  RUN curl -L -O "http://dl.google.com/android/android-sdk_r$ANDROID_SDK_REVISION-linux.tgz"
  RUN tar -xvzf "android-sdk_r$ANDROID_SDK_REVISION-linux.tgz"
  RUN mv android-sdk-linux /usr/local/android-sdk
  RUN rm android-sdk_r$ANDROID_SDK_REVISION-linux.tgz
  
  ENV ANDROID_HOME /usr/local/android-sdk
  ENV PATH $PATH:$ANDROID_HOME/tools
  
negative.code: 
  ENV ANDROID_BUILD_TOOOS_REVISION 23.0.1
  ENV ANDROID_PLATFORM_VERSION 23
  ENV ANDROID_EMULATOR_ABI armeabi-v7a
  ENV ANDROID_EMULATOR_TARGET_NAME android-emulator
  
  RUN echo y | android update sdk --no-ui --all --force --filter \
          platform-tools,build-tools-$ANDROID_BUILD_TOOOS_REVISION,android-$ANDROID_PLATFORM_VERSION \
      && echo y | android update sdk --no-ui --all --force --filter \
          extra-google-m2repository,extra-android-support,extra-android-m2repository \
      && echo y | android update sdk --no-ui --all --force --filter \
          sys-img-$ANDROID_EMULATOR_ABI-android-$ANDROID_EMULATOR_TARGET_VERSION
  
  
  # ================================================================
  