添加watchtower到list

list.json

@@ -83,6 +83,20 @@
       "website": "https://github.com/alist-org/alist",
       "github": "https://github.com/alist-org/alist",
       "document": "https://alist.nn.ci/zh/"
+    },
+    {  
+      "key": "watchtower",
+      "name": "watchtower",
+      "tags": ["Tool"],
+      "versions": ["latest"],
+      "shortDescZh": "自动更新Docker容器基础镜像的工具。",
+      "shortDescEn": "Tool to automatically update Docker container base images.",
+      "type": "tool",
+      "limit": 1,
+      "crossVersionUpdate": false,
+      "website": "https://github.com/containrrr/watchtower",
+      "github": "https://github.com/containrrr/watchtower",
+      "document": "https://containrrr.dev/watchtower/"
     }
  ]
 }