Charts: add registry templating for custom airgap

Airgap could be managed via Rancher Marketplace once we will have our
chart landing there (excluding the teal OS images).
We could anyway provide registry templating to allow separate airgap
management of the operator, seedimage-builder and channel images.

Signed-off-by: Francesco Giudici <francesco.giudici@suse.com>

charts/operator/templates/_helpers.tpl

@@ -4,4 +4,14 @@
 {{- else -}}
 {{- "" -}}
 {{- end -}}
-{{- end -}}
+{{- end -}}
+
+{{- define "registry_url" -}}
+{{- if .Values.global.cattle.systemDefaultRegistry -}}
+{{ include "system_default_registry" . }}
+{{- else if .Values.registry_url -}}
+{{- printf "%s/" .Values.registry_url -}}
+{{- else -}}
+{{- "" -}}
+{{- end -}}
+{{- end -}}

charts/operator/templates/channel.yaml

@@ -6,6 +6,6 @@ metadata:
   namespace: fleet-default
 spec:
   options:
-    image: {{ template "system_default_registry" . }}{{ .Values.channel.repository }}:{{ .Values.channel.tag }}
+    image: {{ template "registry_url" . }}{{ .Values.channel.repository }}:{{ .Values.channel.tag }}
   type: custom
 {{ end }}

charts/operator/templates/deployment.yaml

@@ -24,7 +24,7 @@ spec:
         {{- end }}
         name: {{ .Release.Name }}
         imagePullPolicy: "{{ .Values.image.imagePullPolicy }}"
-        image: {{ template "system_default_registry" . }}{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}
+        image: {{ template "registry_url" . }}{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}
         args:
         - operator
         {{- if .Values.debug }}
@@ -34,9 +34,9 @@ spec:
         - --namespace
         - {{ .Release.Namespace }}
         - --operator-image
-        - {{ template "system_default_registry" . }}{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}
+        - {{ template "registry_url" . }}{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}
         - --seedimage-image
-        - {{ template "system_default_registry" . }}{{ .Values.seedImage.repository }}:{{ .Values.seedImage.tag | default .Chart.AppVersion }}
+        - {{ template "registry_url" . }}{{ .Values.seedImage.repository }}:{{ .Values.seedImage.tag | default .Chart.AppVersion }}
         - --seedimage-image-pullpolicy
         - {{ .Values.seedImage.imagePullPolicy}}
       serviceAccountName: {{ .Release.Name }}

charts/operator/values.yaml

@@ -26,6 +26,9 @@ global:
   cattle:
     systemDefaultRegistry: ""
 
+# used only if systemDefaultRegistry is empty
+registry_url: ""
+
 # enable debug output for operator
 debug: false