anchor.diff:  ARG BUILD_DATE
   ARG VCS_REF
   
  -LABEL maintainer="kontakt@trzeci.eu" \ 
  +LABEL maintainer="kontakt@trzeci.eu" \
         org.label-schema.name="emscripten-slim" \
         org.label-schema.description="This image includes EMSDK, Emscripten and WebAssembly compiler and tools that are very required to compile sources." \
         org.label-schema.url="https://trzeci.eu" \
  
positive.code: &&  rm -fr /tmp/emscripten_test \
      \
  &&  echo "\n## Cleaning up" \
  &&  emcc --clear-cache --clear-ports \
  &&  cd $EMSDK \
  &&  find . -name "*.pyc" -exec rm {} \; \
  &&  cd / \
  
negative.code:     \
  &&  emscripten_version_file=$(find clang/*/src/emscripten-version.txt) \
  &&  mv $emscripten_version_file emscripten-version.txt \
  &&  rm -rf clang/*/src \
  &&  rm -rf clang/*/*/lib \
  &&  rm -rf clang/*/*/docs \
  &&  rm -rf clang/*/*/tools \
  &&  mkdir -p $(echo "$(dirname "$emscripten_version_file")") \
  &&  mv emscripten-version.txt $emscripten_version_file \
      \
  &&  find . -name "CMakeFiles" -type d -prune -exec rm -fr {} \; \
  &&  find . -name "CMakeCache.txt" -exec rm {} \; \
  &&  find . -name "*.o" -exec rm {} \; \
  &&  find . -name "*.a" -exec rm {} \; \
  &&  find . -name "*.inc*" -exec rm {} \; \
  &&  find . -name "*.gen.tmp" -exec rm {} \; \
  &&  rm -fr .git bin node/*_32bit \
  &&  rm -rf emscripten/*/.git \
  &&  rm -rf emscripten/*/tests \
  &&  rm -rf emscripten/*/site \
  &&  rm -rf emscripten/*/docks \
  &&  rm -rf emscripten/*/media \
  &&  rm -rf zips \
      \
  &&  rm -fr /opt/cmake /usr/local/bin/cmake /cmake* \
  