feat: 新增时区配置功能、支持UTC时间自动转换为本地时区及环境变量配置

Dockerfile

@@ -1,5 +1,11 @@
 FROM python:3.11-slim
 
+# Set timezone to Asia/Shanghai (UTC+8) by default
+# Can be overridden with -e TZ=<timezone> when running container
+ENV TZ=Asia/Shanghai \
+    TIMEZONE_OFFSET=8
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
 WORKDIR /app
 
 COPY requirements.txt .