Fix file loss during download (#10779)

Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

contrib/offline/manage-offline-files.sh

@@ -17,7 +17,12 @@ rm -rf "${OFFLINE_FILES_DIR}"
 rm "${OFFLINE_FILES_ARCHIVE}"
 mkdir  "${OFFLINE_FILES_DIR}"
 
-wget -x -P "${OFFLINE_FILES_DIR}" -i "${FILES_LIST}"
+while read -r url; do
+  if ! wget -x -P "${OFFLINE_FILES_DIR}" "${url}"; then
+    exit 1
+  fi
+done < "${FILES_LIST}"
+
 tar -czvf "${OFFLINE_FILES_ARCHIVE}"  "${OFFLINE_FILES_DIR_NAME}"
 
 [ -n "$NO_HTTP_SERVER" ] && echo "skip to run nginx" && exit 0