feat: add lifecycle hook to helm chart (#5397)

ci/helm-chart/templates/deployment.yaml

@@ -62,6 +62,17 @@ spec:
           securityContext:
             runAsUser: {{ .Values.securityContext.runAsUser }}
           {{- end }}
+          {{- if .Values.lifecycle.enabled }}
+          lifecycle:
+            {{- if .Values.lifecycle.postStart }}
+            postStart:
+              {{ toYaml .Values.lifecycle.postStart | nindent 14 }}
+            {{- end }}
+            {{- if .Values.lifecycle.preStop }}
+            preStop:
+              {{ toYaml .Values.lifecycle.preStop | nindent 14 }}
+            {{- end }}
+          {{- end }}
           env:
         {{- if .Values.extraVars }}
 {{ toYaml .Values.extraVars | indent 10 }}

ci/helm-chart/values.yaml

@@ -127,6 +127,15 @@ persistence:
   # existingClaim: ""
   # hostPath: /data
 
+lifecycle:
+  enabled: false
+  # postStart:
+  #  exec:
+  #    command:
+  #      - /bin/bash
+  #      - -c
+  #      - curl -s -L SOME_SCRIPT | bash
+
 ## Enable an Specify container in extraContainers.
 ## This is meant to allow adding code-server dependencies, like docker-dind.
 extraContainers: |