#FROM owncloud:10.0.4
#FROM nextcloud:12.0.5
FROM nextcloud:13

RUN apt-get update && \
    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

CMD cron && apache2-foreground