fix: use python entrypoint with chown /usr/local/lib/python3.10

Dockerfile

@@ -3,17 +3,16 @@ FROM ghcr.io/cinnamon/kotaemon:main-full as base_image
 
 USER root
 RUN useradd -m -u 1000 user || true
-RUN rm -rf /install && ln -s /usr/local /install || true
 RUN chmod -R a+rX /usr/local || true
 RUN chown -R user:user /app || true
+RUN chown -R user:user /usr/local/lib/python3.10 || true
 
 WORKDIR /app
 COPY --chown=user:user . /app
 
 USER user
-ENV PATH="/app/.venv/bin:$PATH"
 ENV GRADIO_SERVER_NAME=0.0.0.0
 ENV GRADIO_SERVER_PORT=7860
 
-ENTRYPOINT ["/app/.venv/bin/python", "app.py"]
+ENTRYPOINT ["python", "app.py"]
 EXPOSE 7860