anchor.diff:  # Import global ARGs
   ARG WORKDIR_ROOT
   ARG PROJECT_NAME
  +ARG BUILD_TARGET
  +ARG BUILD_MODE
   ARG BUILD_BIN
  -ARG BUILD_MODE
  -ARG BUILD_TARGET
   
   WORKDIR ${WORKDIR_ROOT}
   
  
positive.code: 
  ARG PROJECT_NAME=openfairdb
  
  ARG BUILD_BIN=${PROJECT_NAME}
  
  ARG BUILD_MODE=release
  
  ARG BUILD_TARGET=x86_64-unknown-linux-musl
  
  
  ###############################################################################
  
negative.code:     "Cargo.toml", \
      "Cargo.lock", \
      "./" ]
  # Build the dummy project(s), then delete all build artefacts that must(!) not be cached
  RUN cargo build --${BUILD_MODE} --target ${BUILD_TARGET} --all \
      && \
      rm -f ./target/${BUILD_TARGET}/${BUILD_MODE}/${PROJECT_NAME}* \
  