Update Dockerfile to add a virtual environment for Python, this should fix conflicts with system packages that are making the build fail

Author: colourmeamused

Dockerfile

@@ -16,25 +16,30 @@ RUN apt-get update && \
       unzip \
       python3-pip \
       libpq-dev python3 \
+      python3-venv \
     && apt-get autoclean && \
     apt-get autoremove && \
     rm -rf /var/lib/{apt,dpkg,cache,log}
 
+# Create a virtual environment
+RUN python3 -m venv /opt/venv
+
+# Permanently add the virtual environment to the execution PATH
+ENV PATH="/opt/venv/bin:$PATH"
 # Pip installation
 # RUN pip install --upgrade pip==23.1 setuptools==59.7.0
 RUN mkdir -p /conf
 COPY requirements.txt /conf/
 COPY constraints.txt /conf/
-RUN pip install -r /conf/requirements.txt -c /conf/constraints.txt --break-system-packages
+RUN pip install -r /conf/requirements.txt -c /conf/constraints.txt 
 # RUN pip install --upgrade pip==23.1 setuptools==59.7.0 
 # Copy source code and install it
 RUN mkdir -p /code
 WORKDIR /code
 ADD . /code
 
 RUN echo "Installing dea-conflux through the Dockerfile."
-RUN pip install . -c /conf/constraints.txt --break-system-packages
-
+RUN pip install . -c /conf/constraints.txt
 RUN pip freeze && pip check
 
 # Make sure it's working