anchor.diff:  
   # Variables must be references after they are created
   ENV ANDROID_SDK_HOME="$ANDROID_HOME"
  -ENV ANDROID_NDK_HOME="$ANDROID_NDK/android-ndk-r$ANDROID_NDK_VERSION"
  +ENV ANDROID_NDK_HOME="$ANDROID_NDK/android-ndk-$ANDROID_NDK_VERSION"
   
   ENV PATH="$PATH:$ANDROID_SDK_HOME/emulator:$ANDROID_SDK_HOME/tools/bin:$ANDROID_SDK_HOME/tools:$ANDROID_SDK_HOME/platform-tools:$ANDROID_NDK:$FLUTTER_HOME/bin:$FLUTTER_HOME/bin/cache/dart-sdk/bin"
  -
  -COPY README.md /README.md
   
   WORKDIR /tmp
   
  
positive.code:     mkdir --parents "$ANDROID_HOME" && \
      unzip -q sdk-tools.zip -d "$ANDROID_HOME" && \
      rm --force sdk-tools.zip && \
      echo "Installing ndk r${ANDROID_NDK_VERSION}" && \
      wget --quiet --output-document=android-ndk.zip \
      "http://dl.google.com/android/repository/android-ndk-r${ANDROID_NDK_VERSION}-linux-x86_64.zip" && \
      mkdir --parents "$ANDROID_NDK_HOME" && \
      unzip -q android-ndk.zip -d "$ANDROID_NDK" && \
      rm --force android-ndk.zip
  
negative.code:     LANGUAGE="en_US.UTF-8" \
      LC_ALL="en_US.UTF-8"
  
  RUN apt-get clean && \
      apt-get update -qq && \
      apt-get install -qq -y apt-utils locales && \
      locale-gen $LANG
  
  ENV DEBIAN_FRONTEND="noninteractive" \
      TERM=dumb \
  