docs: document template expression support in Connect

Author: josephwoodward

charts/connect/README.md

@@ -258,13 +258,13 @@ Names of Secrets or ConfigMaps that contain environment variables to pass to the
 
 ### [extraVolumeMounts](https://artifacthub.io/packages/helm/redpanda-data/connect?modal=values&path=extraVolumeMounts)
 
-Additional volume mounts for the container.
+Additional volume mounts for the container. Helm template expressions are supported and will be evaluated before rendering.
 
 **Default:** `[]`
 
 ### [extraVolumes](https://artifacthub.io/packages/helm/redpanda-data/connect?modal=values&path=extraVolumes)
 
-Additional volumes to add to the Pod.
+Additional volumes to add to the Pod. Helm template expressions are supported and will be evaluated before rendering.
 
 **Default:** `[]`
 

charts/connect/values.yaml

@@ -237,6 +237,7 @@ updateStrategy: {}
 #     maxUnavailable: 1
 
 # -- Additional volumes to add to the Pod.
+# Helm template expressions are supported and will be evaluated before rendering.
 extraVolumes:
   []
   # - name: config-map
@@ -245,8 +246,13 @@ extraVolumes:
   # - name: secret
   #   secret:
   #     secretName: s-name
+  # Template expressions are supported, e.g. when using this chart as a subchart:
+  # - name: parent-config
+  #   configMap:
+  #     name: '{{ .Release.Name }}-config'
 
 # -- Additional volume mounts for the container.
+# Helm template expressions are supported and will be evaluated before rendering.
 extraVolumeMounts:
   []
   # - name: config-map
@@ -255,6 +261,10 @@ extraVolumeMounts:
   # - name: secret
   #   mountPath: /mnt/secret
   #   readOnly: true
+  # Template expressions are supported, e.g. when using this chart as a subchart:
+  # - name: parent-config
+  #   mountPath: '/mnt/{{ .Release.Name }}'
+  #   readOnly: true
 # 
 # -- Configuration settings for resources in Redpanda Connect.
 connectResources: