release: freeze 2026-10-15 validated release baseline

admin-web/nginx-admin.conf

@@ -32,8 +32,12 @@ server {
     }
 
     # API proxy to backend
+    # 用 resolver + 变量 proxy_pass：避免 nginx 启动时 backend DNS 还没就绪就 [emerg] 退出
+    # Docker Compose 默认网络的内置 DNS resolver 是 127.0.0.11
+    resolver 127.0.0.11 valid=30s ipv6=off;
+    set $backend_upstream "http://backend:8080";
     location /api/ {
-        proxy_pass http://backend:8080;
+        proxy_pass $backend_upstream;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -42,7 +46,7 @@ server {
 
     # WebSocket proxy for chat
     location /ws/ {
-        proxy_pass http://backend:8080;
+        proxy_pass $backend_upstream;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "upgrade";