Update rolac.conf

deploy/vm/nginx/conf.d/rolac.conf

@@ -2,9 +2,16 @@ server {
   listen 80;
   server_name _;
 
+  # Docker's embedded DNS. Using a variable for the upstream below forces nginx
+  # to re-resolve via this resolver instead of caching the container IP at
+  # startup — so api/app can be recreated (new IPs on redeploy) without nginx
+  # holding a stale IP and returning 502.
+  resolver 127.0.0.11 valid=10s ipv6=off;
+
   # API -> api container. The SPA calls same-origin /api/... (environment.prod.ts).
   location /api/ {
-    proxy_pass         http://api:8080/api/;
+    set $upstream_api api;
+    proxy_pass         http://$upstream_api:8080$request_uri;
     proxy_set_header   Host $host;
     proxy_set_header   X-Real-IP $remote_addr;
     proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -13,6 +20,7 @@ server {
 
   # Everything else -> the Angular static app (its own nginx does SPA fallback).
   location / {
-    proxy_pass http://app:80;
+    set $upstream_app app;
+    proxy_pass http://$upstream_app:80;
   }
 }