feat: Hook image puller

Author: samyuh

jupyterhub/templates/_helpers-names.tpl

@@ -196,6 +196,15 @@
     {{- include "jupyterhub.fullname.dash" . }}hook-image-puller
 {{- end }}
 
+{{- /* hook-image-puller ServiceAccount */}}
+{{- define "jupyterhub.continuous-image-puller-serviceaccount.fullname" -}}
+    {{- if .Values.prePuller.hook.serviceAccount.create }}
+        {{- .Values.prePuller.hook.serviceAccount.name | default (include "jupyterhub.hook-image-puller.fullname" .) }}
+    {{- else }}
+        {{- .Values.prePuller.hook.serviceAccount.name | default "default" }}
+    {{- end }}
+{{- end }}
+
 {{- /* continuous-image-puller DaemonSet */}}
 {{- define "jupyterhub.continuous-image-puller.fullname" -}}
     {{- include "jupyterhub.fullname.dash" . }}continuous-image-puller

jupyterhub/templates/image-puller/_helpers-daemonset.tpl

@@ -71,7 +71,9 @@ spec:
       {{- end }}
       terminationGracePeriodSeconds: 0
       {{- if .hook }}
-      serviceAccountName: "hook-image-puller-serviceaccount"
+      {{- with include "jupyterhub.continuous-image-puller-serviceaccount.fullname" . }}
+      serviceAccountName: {{ . }}
+      {{- end }}
       {{- else }}
       {{- with include "jupyterhub.continuous-image-puller-serviceaccount.fullname" . }}
       serviceAccountName: {{ . }}

jupyterhub/templates/image-puller/serviceaccount-hook.yaml

@@ -1,12 +1,12 @@
 {{- /*
-ServiceAccount for the pre-puller hook's
+ServiceAccount for the hook image-puller
 */}}
 {{- if .Values.prePuller.hook.serviceAccount.create -}}
 {{- if (include "jupyterhub.imagePuller.daemonset.hook.install" .) -}}
 apiVersion: v1
 kind: ServiceAccount
 metadata:
-  name: "hook-image-puller-serviceaccount"
+  name: {{ include "jupyterhub.hook-image-puller.fullname" . }}
   labels:
     {{- include "jupyterhub.labels" . | nindent 4 }}
     hub.jupyter.org/deletable: "true"