anchor.diff:      rm *tools*linux*.zip
   
   # set the environment variables
  -ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64
  +ENV JAVA_HOME /usr/lib/jvm/java-${JDK_VERSION}-openjdk-amd64
   ENV GRADLE_HOME /opt/gradle
   ENV KOTLIN_HOME /opt/kotlinc
   ENV PATH ${PATH}:${GRADLE_HOME}/bin:${KOTLIN_HOME}/bin:${ANDROID_SDK_ROOT}/cmdline-tools/tools/bin:${ANDROID_SDK_ROOT}/platform-tools:${ANDROID_SDK_ROOT}/emulator
  
positive.code: RUN dpkg --add-architecture i386 && \
      apt-get update && \
      apt-get install -y --no-install-recommends libncurses5:i386 libc6:i386 libstdc++6:i386 lib32gcc1 lib32ncurses6 lib32z1 zlib1g:i386 && \
      apt-get install -y --no-install-recommends openjdk-8-jdk && \
      apt-get install -y --no-install-recommends git wget unzip && \
      apt-get install -y --no-install-recommends qt5-default
  
  
negative.code: # ---------------------------------------------------------------------- #
  LABEL maintainer "thyrlian@gmail.com"
  
  ARG JDK_VERSION=8
  # support multiarch: i386 architecture
  # install Java
  # install essential tools
  