using non root user

[nbraun-wolf]

Hi, thanks for this repo. It's really useful. I have one problem though. I want to use a non-root user in the image. Do you have any idea how this could be done?

I get some error like this:

crond[11]: can't set groups: Operation not permitted

More Info

Dockerfile

FROM python:3.8-alpine

ENV PYTHONPATH /opt/app

RUN rm -rf /etc/periodic
COPY entrypoint.sh /usr/bin/
COPY cronjob /var/spool/cron/crontabs/root

ARG UID=9000
ARG USER=uwsgi
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home ${PYTHONPATH} \
    --no-create-home \
    --uid ${UID} \
    ${USER}

RUN touch /etc/environment
RUN chown ${UID}:${UID} /etc/environment

WORKDIR ${PYTHONPATH}
COPY cmd.sh .
USER ${USER}

ENTRYPOINT [ "entrypoint.sh" ]
CMD [ "./cmd.sh" ]

entrypoint.sh

#!/bin/sh

set -ex

env >> /etc/environment
crond -l 2

exec "$@"

cronjob

*   *   *   *   *   date

cmd.sh

#!/bin/sh

while true;
do
    echo "running"
    sleep 12
done

Related Links

I found one old question on SO regarding this:
https://stackoverflow.com/questions/53103621/how-to-start-crond-as-non-root-user-in-a-docker-container

[jacobbeasley]

I've seen people use this - https://github.com/odise/go-cron