Here is my Dockerfile (or at least the interesting part):

FROM debian:7
MAINTAINER pjb <pjb@example.com>

RUN apt-get update && apt-get install -y build-essential ntp cron

ADD config/job /etc/cron.d/job
ADD config/cron /etc/default/cron
RUN chmod 0644 /etc/cron.d/job

CMD cron && tail -f /var/log/cron.log

I use this command to run the container:

docker run -d --restart=always -e "TZ=Europe/Paris" -v /etc/timezone:/etc/timezone:ro --name=mycontainer pjb/repo

When I enter the container (docker exec -it mycontainer bash) all looks good to me:


* * * * * root /bin/date >> /var/log/cron.log 2>&1





And /bin/date gives me the correct time.

But the date I get inside /var/log/cron.log is UTC time. It should be UTC+1.


I ended up setting the timezone directly in my application (run by cron), and it works as expected.

ENV['TZ'] = 'Europe/Paris'

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