feat(common): add upgrade and install specific initContainers

charts/library/common/Chart.yaml

@@ -15,4 +15,4 @@ maintainers:
 name: common
 sources: null
 type: library
-version: 8.13.5
+version: 8.14.0

charts/library/common/templates/lib/controller/_pod.tpl

@@ -63,6 +63,32 @@ initContainers:
     {{- end }}
     {{- tpl (toYaml $initContainers) $ | nindent 2 }}
   {{- end }}
+  {{- if .Release.IsInstall }}
+  {{- if .Values.installContainers }}
+    {{- $initContainers := list }}
+    {{- range $index, $key := (keys .Values.initContainers | uniq | sortAlpha) }}
+      {{- $container := get $.Values.initContainers $key }}
+      {{- if not $container.name -}}
+        {{- $_ := set $container "name" $key }}
+      {{- end }}
+      {{- $initContainers = append $initContainers $container }}
+    {{- end }}
+    {{- tpl (toYaml $initContainers) $ | nindent 2 }}
+  {{- end }}
+  {{- end }}
+  {{- if .Release.IsUpgrade }}
+  {{- if .Values.upgradeContainers }}
+    {{- $initContainers := list }}
+    {{- range $index, $key := (keys .Values.initContainers | uniq | sortAlpha) }}
+      {{- $container := get $.Values.initContainers $key }}
+      {{- if not $container.name -}}
+        {{- $_ := set $container "name" $key }}
+      {{- end }}
+      {{- $initContainers = append $initContainers $container }}
+    {{- end }}
+    {{- tpl (toYaml $initContainers) $ | nindent 2 }}
+  {{- end }}
+  {{- end }}
 containers:
   {{- include "common.controller.mainContainer" . | nindent 2 }}
   {{- with .Values.additionalContainers }}

charts/library/common/values.yaml

@@ -334,6 +334,12 @@ securityContext:
 # -- Configure the lifecycle for the main container
 lifecycle: {}
 
+# -- These containers will be run, as an initcontainer, a single time at install only.
+installContainers: {}
+
+# -- These containers will be run, as an initcontainer, a single time at each edit or update of the chart.
+upgradeContainers: {}
+
 # -- Specify any initContainers here as dictionary items. Each initContainer should have its own key.
 # The dictionary item key will determine the order. Helm templates can be used.
 initContainers: {}