Update aliyun-backup.yml

.github/workflows/aliyun-backup.yml

@@ -1,9 +1,9 @@
-name: 发布博客
+name: 备份到阿里云oss
 
 on:
-  push:
-    branches: ["main"]
-  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * 0" # 每周日的00:00执行一次
+  workflow_dispatch: # 手动触发工作流
 
 concurrency:
   group: "pages"