anchor.diff:  # -----------------------------------------------------------------------------
   #                          Install Libraries/Tools
   # -----------------------------------------------------------------------------
  -## Install fzf command line tool
  +# ------------------------ command line tool: fzf -----------------------------
   RUN set -ex; \
       git clone --branch $FZF_VERION --depth 1 --recurse-submodules -j8 \
           git://github.com/junegunn/fzf.git /build/fzf \
       && cd /build/fzf \
       && ./install --all
   
  -# Compile and Install latest jemalloc
  +# ------------------------ Jemalloc -------------------------------------------
   RUN set -ex; \
       git clone --branch $JEMALLOC_VERSION --depth 1 --recurse-submodules -j8 \
           git://github.com/jemalloc/jemalloc.git /build/jemalloc \
  
positive.code:     && cd / \
      && rm -rf /build/cquery
  
  ## Install ccls (C/C++)
  RUN set -ex; \
      deps=' \
          zlib1g-dev \
  
negative.code:     && npm install yarn --global \
      && rm -rf /build/n
  
  # ------------------------ OpenJDK --------------------------------------------
  RUN set -ex; \
      apt-get update && apt-get install -y --no-install-recommends \
          $JAVA_VERSION \
  