allow renovate to fetch release notes

apps/nextcloud/readme.md

@@ -0,0 +1,17 @@
+## Running occ commands
+
+Sometimes you need to run a command on the Nextcloud container directly. You can do that by running commands as the user www-data via the kubectl exec command.
+```
+# $NEXTCLOUD_POD should be the name of *your* nextcloud pod :)
+kubectl exec $NEXTCLOUD_POD -- su -s /bin/sh www-data -c "php occ myocccomand"
+```
+Here are some examples below.
+Putting Nextcloud into maintanence mode
+
+Some admin actions require you to put your Nextcloud instance into
+
+(e.g. backups):
+```
+# $NEXTCLOUD_POD should be the name of *your* nextcloud pod :)
+kubectl exec $NEXTCLOUD_POD -- su -s /bin/sh www-data -c "php occ maintenance:mode --on"
+```s