feat:Dockerfile添加uv的index_url

docker/Dockerfile

@@ -143,7 +143,8 @@ ENV BACKEND=${BACKEND} \
     DEBIAN_FRONTEND=noninteractive \
     PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
-    UV_HTTP_TIMEOUT=3600
+    UV_HTTP_TIMEOUT=3600 \
+    UV_INDEX_URL=http://mirrors.aliyun.com/pypi/simple/
 
 # System dependencies for audio processing
 ARG DEPENDENCIES=" \