anchor.diff:  
   COPY ./requirements.txt /app
   
  -ENV LLVM_CONFIG=/usr/bin/llvm9-config
  +ENV LLVM_CONFIG=/usr/bin/llvm-config
   
   RUN apk add --no-cache --virtual .build \
       autoconf \
  
positive.code:     py3-gevent \
      zlib \
      jpeg \
      llvm9 \
      libtool \
      supervisor \
      py3-numpy-dev \
  
negative.code:     g++ \
      gcc \
      jpeg-dev \
      llvm10-dev\
      make \
      zlib-dev \
      && apk add --no-cache \
  