fix: switch over to python user to drop permissions

Dockerfile

@@ -6,6 +6,8 @@ EXPOSE 5000
 
 # First, copy and install only the requirements...
 RUN useradd -ms /bin/bash python && chown -R python:python /app
+USER python
+ENV PATH="$PATH:/home/python/.local/bin"
 RUN pip install --upgrade pip setuptools
 RUN pip install pipenv
 COPY Pipfile.lock .