Add Nextcloud Docker configuration and scripts, including Dockerfile, entrypoint, cron, and various config files for caching, SMTP, and object storage

containers/nextcloud/config/apcu.config.php

@@ -0,0 +1,4 @@
+<?php
+$CONFIG = array (
+  'memcache.local' => '\OC\Memcache\APCu',
+);