[stable/joomla] Use immutable tags (#14213)

* Bump chart version

Signed-off-by: Carlos Rodriguez Hernandez <crhernandez@bitnami.com>

* [stable/joomla] Use immutable tags

Signed-off-by: Carlos Rodriguez Hernandez <crhernandez@bitnami.com>

stable/joomla/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: joomla
-version: 4.2.2
+version: 4.2.3
 appVersion: 3.9.6
 description: PHP content management system (CMS) for publishing web content
 keywords:

stable/joomla/README.md

@@ -53,7 +53,7 @@ The following table lists the configurable parameters of the Joomla! chart and t
 | `global.imagePullSecrets`            | Global Docker registry secret names as an array             | `[]` (does not add image pull secrets to deployed pods) |
 | `image.registry`                     | Joomla! image registry                                      | `docker.io`                                    |
 | `image.repository`                   | Joomla! Image name                                          | `bitnami/joomla`                               |
-| `image.tag`                          | Joomla! Image tag                                           | `{VERSION}`                                    |
+| `image.tag`                          | Joomla! Image tag                                           | `{TAG_NAME}`                                   |
 | `image.pullPolicy`                   | Image pull policy                                           | `Always`                                       |
 | `image.pullSecrets`                  | Specify docker-registry secret names as an array            | `[]` (does not add image pull secrets to deployed pods) |
 | `joomlaUsername`                     | User of the application                                     | `user`                                         |
@@ -147,6 +147,12 @@ $ helm install --name my-release -f values.yaml stable/joomla
 
 > **Tip**: You can use the default [values.yaml](values.yaml)
 
+### [Rolling VS Immutable tags](https://docs.bitnami.com/containers/how-to/understand-rolling-tags-containers/)
+
+It is strongly recommended to use immutable tags in a production environment. This ensures your deployment does not change automatically if the same tag is updated with a different image.
+
+Bitnami will release a new chart updating its containers if a new version of the main container, significant changes, or critical vulnerabilities exist.
+
 ## Persistence
 
 The [Bitnami Joomla!](https://github.com/bitnami/bitnami-docker-joomla) image stores the Joomla! data and configurations at the `/bitnami/joomla` and `/bitnami/apache` paths of the container.

stable/joomla/templates/NOTES.txt

@@ -59,3 +59,10 @@ host. To configure Joomla! to use and external database host:
   helm upgrade {{ .Release.Name }} --set service.type={{ .Values.service.type }},mariadb.enabled=false,externalDatabase.host=YOUR_EXTERNAL_DATABASE_HOST stable/joomla
 
 {{- end }}
+
+{{- if and (contains "bitnami/" .Values.image.repository) (not (.Values.image.tag | regexFind "-r\\d+$")) }}
+
+WARNING: Rolling tag detected ({{ .Values.image.repository }}:{{ .Values.image.tag }}), please note that it is strongly recommended to avoid using rolling tags in a production environment.
++info https://docs.bitnami.com/containers/how-to/understand-rolling-tags-containers/
+
+{{- end }}

stable/joomla/values.yaml

@@ -13,7 +13,7 @@
 image:
   registry: docker.io
   repository: bitnami/joomla
-  tag: 3.9.6
+  tag: 3.9.6-debian-9-r9
   ## Specify a imagePullPolicy
   ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
   ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images