修复docker环境异常

backend/Dockerfile

@@ -44,6 +44,8 @@ CMD ["uvicorn", "auth_service.app.main:app", "--host", "0.0.0.0", "--port", "800
 FROM base AS api-service
 
 COPY api_service/ ./api_service/
+# api_service 代码 import 了 auth_service 的 security 模块
+COPY auth_service/ ./auth_service/
 
 ENV PYTHONPATH=/app
 USER appuser

backend/shared/config.py

@@ -34,7 +34,11 @@ class SharedSettings(BaseSettings):
 
     class Config:
         case_sensitive = True
+        # Docker 环境下不读 .env 文件，靠 docker-compose environment 注入
+        # 本地开发时 .env 文件仍然生效
         env_file = ".env"
+        env_file_encoding = "utf-8"
+        extra = "ignore"
 
 
 shared_settings = SharedSettings()