anchor.diff:  
   COPY requirements.txt ./requirements.txt
   
  -RUN apk -U upgrade \
  - && apk add -t build-dependencies \
  +RUN apk upgrade --no-cache \
  + && apk add --no-cache -t build-dependencies \
       build-base \
       py3-setuptools \
       python3-dev \
  
positive.code:     uwsgi-python3 \
   && pip3 install --upgrade pip \
   && pip3 install --no-cache -r requirements.txt \
   && apk del build-dependencies \
   && rm -f /var/cache/apk/*
  
  COPY --chown=searx:searx . .
  
  
negative.code:     openssl-dev \
      tar \
      git \
   && apk add --no-cache \
      ca-certificates \
      su-exec \
      python3 \
  