FROM debian:stable-slim ENV DEBIAN_FRONTEND noninteractive RUN apt-get update && apt-get -y upgrade RUN apt-get -y install \ certbot \ cron \ supervisor ADD certbot.cron /etc/cron.d/certbot VOLUME ["/etc/letsencrypt"] COPY supervisord.conf /etc/supervisord.conf CMD ["/usr/bin/supervisord", "-c", "/etc/supervisord.conf"]