Update ghost chart to work with non-root ghost container (helm#1717)

* Update ghost chart to work with non-root ghost container

* Bump chart version and move busybox image and tag to values.yaml

* Change volumePermissions init-container structure in values.yaml

Author: tompizmor

stable/ghost/templates/deployment.yaml

@@ -15,6 +15,14 @@ spec:
       labels:
         app: {{ template "fullname" . }}
     spec:
+      initContainers:
+      - name: volume-permissions
+        image: "{{ .Values.volumePermissions.image.name }}:{{ .Values.volumePermissions.image.tag }}"
+        imagePullPolicy: {{ default "" .Values.volumePermissions.image.pullPolicy | quote }}
+        command: ['sh', '-c', 'chmod -R g+rwX /bitnami']
+        volumeMounts:
+        - mountPath: /bitnami
+          name: ghost-data
       containers:
       - name: {{ template "fullname" . }}
         image: "{{ .Values.image }}"

stable/ghost/values.yaml

@@ -1,7 +1,15 @@
 ## Bitnami Ghost image version
 ## ref: https://hub.docker.com/r/bitnami/ghost/tags/
 ##
-image: bitnami/ghost:0.11.10-r1
+image: bitnami/ghost:0.11.10-r2
+
+## Busybox image used to configure volume permissions
+##
+volumePermissions:
+  image:
+    name: busybox
+    tag: 1.27.1
+#    pullPolicy:
 
 ## Specify a imagePullPolicy
 ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'