FROM python:3.9-buster

RUN apt-get update; apt-get install --no-install-recommends cron

RUN touch /var/log/cron.log
COPY collect.sh /root/collect.sh
RUN echo '*/2 *    * * *   root    /root/collect.sh' >> /etc/crontab

CMD ["/bin/bash", "-c", "cron && tail -f /var/log/cron.log"]