chore: 🐳 新增 Portainer 部署用 docker-compose

外部端口 8088 → 容器 80，镜像 tag 跟 Woodpecker 构建输出一致。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,16 @@
+version: '3.8'
+
+services:
+  log-lottery:
+    image: harbor.lnh2e.com/lingniu-v1/log-lottery:main-0.6.0-5
+    ports:
+      - "8088:80"
+    deploy:
+      replicas: 1
+      restart_policy:
+        condition: on-failure
+      placement:
+        constraints: [node.role == manager]
+      labels:
+        - portainer.hide=false
+        - project=lingniu