diff --git a/Dockerfile b/Dockerfile
index 466ee95..5b49b4b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,10 +3,33 @@
 # FROM nextcloud:16
 # FROM nextcloud:17
 # FROM nextcloud:18.0.6-apache
-FROM nextcloud:19.0.0-apache
+# FROM nextcloud:19.0.3-apache
+# FROM nextcloud:20.0.0-apache
+# FROM nextcloud:20.0.5-apache
+FROM nextcloud:21.0.0-apache
 
-# RUN apt-get update && \
-#     apt-get install -q -y cron && \
+RUN apt-get update \
+ && apt-get install -y nano \
+ && apt-get clean
+
+## Enable REDIS extension
+# RUN pecl channel-update pecl.php.net \
+#  && sh -c "yes '' |  pecl install redis" \
+#  && rm -rf /tmp/pear \
+#  && rm -f /usr/local/etc/php/glenux-redis.ini \
+#  && echo "extension=redis.so" >> /usr/local/etc/php/glenux-redis.ini \
+#  && docker-php-ext-enable redis
+
+## Enable APCU extension
+# RUN pecl channel-update pecl.php.net \
+#  && pecl install apcu-${APCU_VERSION} \
+#  && rm -f /usr/local/etc/php/glenux-apcu.ini \
+#  && echo "extension=apcu.so" >> /usr/local/etc/php/glenux-apcu.ini \
+#  && echo "apc.enable_cli=1" >> /usr/local/etc/php/glenux-apcu.ini \
+#  && echo "apc.enable=1" >> /usr/local/etc/php/glenux-apcu.ini \
+#  && docker-php-ext-enable apcu
+
+#    apt-get install -q -y cron && \
 #     apt-get clean
 
 # RUN echo "*/15 * * * *  root    su -l www-data -s /bin/bash -c 'php -f /var/www/html/cron.php' > /dev/null 2>&1" >> /etc/crontab