FROM openresty/openresty:1.19.3.1-8-bionic RUN apt-get update -qq && apt-get install cron logrotate -qq RUN luarocks install luasocket # change "syslog" user to "adm" user in logrotate.conf RUN sed -i 's/^su root syslog/su root adm/' /etc/logrotate.conf # copy nginx logrotate config and assign correct owner COPY ./logrotate /etc/logrotate.d/nginx RUN chown root:root /etc/logrotate.d/nginx CMD ["sh", "-c", "service cron start ; /usr/local/openresty/bin/openresty -g 'daemon off;'"]