adding healthcheck

nginx.conf.template

@@ -1,5 +1,17 @@
 events {}
 
+http {
+    server {
+        listen 8080; # Listen on a separate port for health checks
+
+        location /healthz {
+            # Just return a 200 OK for any request to /healthz
+            return 200 'healthy\n';
+            add_header Content-Type text/plain;
+        }
+    }
+}
+
 stream {
     # TCP proxy configuration
     server {