Add a script to copy the content of the custom folder to a running pod

For now it is only labels, but adding anything supported will work
(robots.txt, public files, templates, etc)

The content will be copied to the /data/gitea/ folder that is a mounted
persistent volume

https://docs.gitea.io/en-us/customizing-gitea/

kubernetes/gitea-server.yaml

@@ -17,18 +17,13 @@ spec:
           image: busybox
           command: [
             'sh', '-c',
-            'mkdir -p /data/gitea/conf && mkdir -p /data/gitea/https && mkdir -p /data/gitea/options/label && cp /root/conf/app.ini /data/gitea/conf/app.ini && chown 1000:1000 /data/gitea/conf/app.ini && chmod 660 /data/gitea/conf/app.ini && cp /root/conf/*.pem /data/gitea/https && chmod 600 /data/gitea/https/*.pem && cp /root/options/label/* /data/gitea/options/label/ && chown -R 1000:1000 /data/gitea'
+            'mkdir -p /data/gitea/conf && mkdir -p /data/gitea/https && cp /root/conf/app.ini /data/gitea/conf/app.ini && chown 1000:1000 /data/gitea/conf/app.ini && chmod 660 /data/gitea/conf/app.ini && cp /root/conf/*.pem /data/gitea/https && chmod 600 /data/gitea/https/*.pem && chown -R 1000:1000 /data/gitea'
           ]
           volumeMounts:
           - mountPath: /data
             name: gitea-server-data
           - mountPath: /root/conf
             name: config
-          # The labels have been created as a ConfigMap from local files using this command:
-          #
-          # kubectl create configmap gitea-options-label --from-file=custom/options/label/
-          - mountPath: /root/options/label
-            name: label
       containers:
       - name: gitea-server
         image: gitea/gitea:1.7.2
@@ -57,9 +52,6 @@ spec:
             - key: key.pem
               path: key.pem
               mode: 256
-      - name: label
-        configMap:
-          name: gitea-options-label
 ---
 apiVersion: v1
 kind: PersistentVolumeClaim