ddns-updated must point to outside dns

ddns-updater/config.json

@@ -0,0 +1,14 @@
+{
+    "settings": [
+      {
+        "provider": "cloudflare",
+        "zone_identifier": "cfa643a7268a07bddafdb3054bc07c4f",
+        "domain": "home.lksz.me",
+        "proxied": false,
+        "ttl": 600,
+        "token": "tIlizVv2GWLV7qbr9L3lU1xBDLW0aKXcOfWMp9Pq",
+        "ip_version": "ipv4",
+        "ipv6_suffix": ""
+      }
+    ]
+  }

ddns-updater/docker-compose.yml

@@ -1,8 +1,10 @@
 services:
   ddns-updater:
+    dns:
+    - 1.1.1.1
     environment:
-      USER_UID: "${HOST_UID}"
-      USER_GID: "${HOST_GID}"
+      USER_UID: "${HOST_UID:?Must specify HOST_UID}"
+      USER_GID: "${HOST_GID:-${HOST_UID}}"
 
       ### Configuration
       # DATADIR: "/updater/data"