anchor.diff:  COPY --from=build /app /app
   COPY --from=build /root/.local /root/.local
   COPY --from=build /usr/local/bin/waitforit /usr/local/bin/waitforit
  +
  +ENV WAITFORIT_VERSION="v2.4.1"
  +RUN curl -o /usr/local/bin/waitforit -sSL https://github.com/maxcnunes/waitforit/releases/download/$WAITFORIT_VERSION/waitforit-linux_amd64 && \
  +    chmod +x /usr/local/bin/waitforit
   
   # Celery worker
   FROM python:3.9.6-slim as celery-worker
  
positive.code: ARG INSTALL_JUPYTER=false
  RUN bash -c "if [ $INSTALL_JUPYTER == 'true' ] ; then pip install --user jupyterlab ; fi"
  
  # allow container to wait for other services
  ENV WAITFORIT_VERSION="v2.4.1"
  RUN curl -o /usr/local/bin/waitforit -sSL https://github.com/maxcnunes/waitforit/releases/download/$WAITFORIT_VERSION/waitforit-linux_amd64 && \
      chmod +x /usr/local/bin/waitforit
  
  # Backend
  FROM python:3.9.6-slim as backend
  ENV PYTHONPATH=/app
  
negative.code: COPY --from=build /root/.local /root/.local
  COPY --from=build /usr/local/bin/waitforit /usr/local/bin/waitforit
  
  ENV WAITFORIT_VERSION="v2.4.1"
  RUN curl -o /usr/local/bin/waitforit -sSL https://github.com/maxcnunes/waitforit/releases/download/$WAITFORIT_VERSION/waitforit-linux_amd64 && \
      chmod +x /usr/local/bin/waitforit
  
  COPY ./worker-start.sh /worker-start.sh
  RUN chmod +x /worker-start.sh
  CMD ["bash", "/worker-start.sh"]
  