fix offline prepare scripts (#11962)

fix offline prepare scripts

contrib/offline/manage-offline-files.sh

@@ -41,7 +41,7 @@ fi
 
 sudo "${runtime}" container inspect nginx >/dev/null 2>&1
 if [ $? -ne 0 ]; then
-    sudo "${runtime}" run \
+    sudo --preserve-env=http_proxy,https_proxy,no_proxy "${runtime}" run \
         --restart=always -d -p ${NGINX_PORT}:80 \
         --volume "${OFFLINE_FILES_DIR}":/usr/share/nginx/html/download \
         --volume "${CURRENT_DIR}"/nginx.conf:/etc/nginx/nginx.conf \