Aggiorno dall'upstream

Dockerfile

@@ -4,6 +4,8 @@ ENV PYTHONUNBUFFERED=1
 ENV USE_DOCKER=true
 WORKDIR /code
 COPY . /code/
+RUN echo "Use legency resolver for pip. It does not use the feature back-tracking. Thus is easier to debug imcompatible dependencies."
+RUN pip install --upgrade pip --use-deprecated=legacy-resolver
 ARG DJANGO_VERSION="3.1.7"
 RUN echo "Installing Django Version: ${DJANGO_VERSION}"
 RUN pip install django==${DJANGO_VERSION}