anchor.diff:  # Build-time flags
   ARG WITH_PLUGINS=true
   
  -# Packages directory
  +# Environment variables
   ENV PACKAGES=/usr/local/lib/python3.8/site-packages
  +ENV PYTHONDONTWRITEBYTECODE=1
   
   # Set build directory
   WORKDIR /tmp
  
positive.code:   && \
      if [ "${WITH_PLUGINS}" = "true" ]; then \
        pip install --no-cache-dir \
          'mkdocs-minify-plugin>=0.3' \
          'mkdocs-redirects>=1.0'; \
      fi \
    && apk del .build gcc musl-dev \
    && \
  
negative.code:         ${PACKAGES}/material \
          ${PACKAGES}/mkdocs/themes/$theme; \
      done \
    && rm -rf /tmp/* /root/.cache \
    && \
      find ${PACKAGES} \
        -type f \
        -path "*/__pycache__/*" \
        -exec rm -f {} \;
  
  # Set working directory
  WORKDIR /docs
  