fix(examples): require selector image override

Signed-off-by: Kay Yan <kay.yan@daocloud.io>

Author: yankay

examples/runtime-free-router/sglang/README.md

@@ -41,6 +41,10 @@ kubectl create secret generic hf-token-secret \
   -n "${NAMESPACE}"
 ```
 
+Before applying, replace the `my-registry/dynamo-select-service:my-tag`
+placeholder in `kustomization.yaml` with a Dynamo image that includes
+`python -m dynamo.select_service`.
+
 Apply the manifests and wait for the Pods:
 
 ```bash

examples/runtime-free-router/sglang/kustomization.yaml

@@ -8,8 +8,9 @@ resources:
   - sglang-worker.yaml
 images:
   - name: dynamo-image
-    newName: nvcr.io/nvidia/ai-dynamo/dynamo-frontend
-    newTag: 1.3.0-dev.1
+    # Replace with a Dynamo image built with the select-service feature.
+    newName: my-registry/dynamo-select-service
+    newTag: my-tag
   - name: sglang-image
     newName: lmsysorg/sglang
     newTag: v0.5.12.post1