🏗️ chore: Update Python version in Dockerfile

Dockerfile

@@ -1,19 +1,17 @@
 # 第一个阶段
-FROM python:3.11-buster as builder
+FROM python:3.9-buster as builder
 
 RUN apt update && \
     apt install -y build-essential && \
     pip install -U pip setuptools wheel && \
     pip install pdm
 
-COPY pyproject.toml pdm.lock README.md /app/
-COPY llmkira /app/llmkira
-
-WORKDIR /app
+COPY pyproject.toml pdm.lock README.md /project/
+WORKDIR /project
 RUN mkdir __pypackages__ && pdm sync -G bot --prod --no-editable
 
 # 第二个阶段
-FROM python:3.11-slim-buster as runtime
+FROM python:3.9-slim-buster as runtime
 
 RUN apt update && \
     apt install -y npm && \
@@ -22,10 +20,13 @@ RUN apt update && \
 
 VOLUME ["/redis", "/rabbitmq", "/mongodb", "/run.log", "/config_dir"]
 
-ENV PYTHONPATH=/project/pkgs
-COPY --from=builder /app/__pypackages__/3.11/lib /project/pkgs
+# retrieve packages from build stage
+ENV PATH="/bin:$PATH"
+ENV PYTHONPATH="/project/pkgs:$PYTHONPATH"
+COPY --from=builder /project/__pypackages__/3.9/lib /project/pkgs
 # retrieve executables
-COPY --from=builder /app/__pypackages__/3.11/bin/* /bin/
+COPY --from=builder /project/__pypackages__/3.9/bin/* /bin/
+
 
 WORKDIR /app
 COPY pm2.json ./