poststartup script moved to extra container, non init

elasticsearch/values.yaml

@@ -193,7 +193,6 @@ extraContainers:
           for idx in "chat:$TEMPLATE_PATH_1" "message:$TEMPLATE_PATH_2" "user:$TEMPLATE_PATH_3"; do
             name="${idx%%:*}"
             path="${idx##*:}"
-            # Check if index exists
             if curl -sf -o /dev/null "$ES_URL/$name"; then
               echo "[template-loader] Index $name already exists. Skipping."
             else
@@ -203,8 +202,8 @@ extraContainers:
                 --data-binary @"$path"
             fi
           done
-          echo "[template-loader] All templates applied (or skipped). Exiting."
-
+          echo "[template-loader] All templates applied (or skipped). Going to sleep to prevent container exit."
+          sleep infinity
     env:
       - name: ES_URL
         value: "http://elasticsearch-master:9200"