Update Helm chart README and values.yaml; fix image reference in metrics-push.yaml

- Changed installation command from `install` to `upgrade` in README for health check.
- Added `initContainerImage` entry in values.yaml.
- Updated image reference in metrics-push.yaml to include the full Docker repository path.

Author: jolettacheungoracle

oci-scanner-plugin-helm/README.md

@@ -26,7 +26,8 @@ helm install oci-gpu-scanner-plugin . -f values.yaml -n oci-gpu-scanner-plugin \
   --create-namespace
 
 # Enable health check
-helm install oci-gpu-scanner-plugin ./oci-scanner-plugin-amd-helm \
+helm upgrade oci-gpu-scanner-plugin ./oci-scanner-plugin-helm \
+  -n oci-gpu-scanner-plugin \
   --set healthCheck.enabled=true
 
 # Enable Node Problem Detector (requires node labeling and drhpc to be enabled- see below)

oci-scanner-plugin-helm/templates/metrics-push.yaml

@@ -34,7 +34,7 @@ spec:
       restartPolicy: Always
       containers:
       - name: metrics-pusher
-        image: curlimages/curl:latest
+        image: docker.io/curlimages/curl:latest
         command:
         - /bin/sh
         - -c

oci-scanner-plugin-helm/values.yaml

@@ -50,6 +50,7 @@ device-metrics-exporter-charts:
     repository: docker.io/rocm/device-metrics-exporter
     tag: v1.4.0
     pullPolicy: IfNotPresent
+    initContainerImage: docker.io/library/busybox:1.36
   service:
     type: ClusterIP
     ClusterIP: