Pull from python3.9 base image & pip upgrade setuptools

Dockerfile

-FROM python:3.9.13-slim-bullseye AS base
+FROM python:3.9-slim-bullseye AS base
 
 ENV PYTHONUNBUFFERED=1
 
@@ -7,7 +7,7 @@ COPY requirements.txt .
 
 RUN apt-get update && apt-get install -y libmagic1 curl graphviz
 
-RUN pip install --upgrade pip
+RUN pip install --upgrade pip setuptools
 RUN pip install --no-cache-dir -r requirements.txt
 
 EXPOSE 8000