CI/CD: ci, deploy-ift/stage; nginx DNS resolver для admin-ui proxy

nginx.conf

@@ -3,12 +3,16 @@ server {
     root /usr/share/nginx/html;
     index index.html;
 
+    # Docker embedded DNS — не кэшировать IP upstream при redeploy eventhub
+    resolver 127.0.0.11 valid=10s ipv6=off;
+
     location / {
         try_files $uri $uri/ /index.html;
     }
 
     location /v1/ {
-        proxy_pass http://eventhub:8445;   # admin-api слушает HTTP на порту 8445
+        set $eventhub_api eventhub;
+        proxy_pass http://$eventhub_api:8445;
         proxy_http_version 1.1;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
@@ -17,7 +21,8 @@ server {
     }
 
     location /admin/ws {
-        proxy_pass http://eventhub:8446;   # admin-ws слушает HTTP на порту 8446
+        set $eventhub_ws eventhub;
+        proxy_pass http://$eventhub_ws:8446;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "upgrade";