anchor.diff:  
   # download and install Android SDK
   # https://developer.android.com/studio#command-tools
  -ARG ANDROID_SDK_VERSION=8092744
  +ARG ANDROID_SDK_VERSION=8512546
   ENV ANDROID_SDK_ROOT /opt/android-sdk
   RUN mkdir -p ${ANDROID_SDK_ROOT}/cmdline-tools && \
       wget -q https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_SDK_VERSION}_latest.zip && \
  
positive.code: 
  # download and install Kotlin compiler
  # https://github.com/JetBrains/kotlin/releases/latest
  ARG KOTLIN_VERSION=1.6.21
  RUN cd /opt && \
      wget -q https://github.com/JetBrains/kotlin/releases/download/v${KOTLIN_VERSION}/kotlin-compiler-${KOTLIN_VERSION}.zip && \
      unzip *kotlin*.zip && \
  
negative.code: # support multiarch: i386 architecture
  # install Java
  # install essential tools
  ARG JDK_VERSION=11
  RUN dpkg --add-architecture i386 && \
      apt-get update && \
  