cron-docker/Dockerfile

FROM debian:buster

LABEL Maintainer="Wolfgang Hottgenroth <woho@hottis.de>"
LABEL ImageName="registry.hottis.de/dockerized/cron-docker"

ARG SMARTHOST="172.16.11.15"
ARG MAILDOMAIN="hottis.de"
ARG APP_DIR="/opt/app"

RUN \
  apt update && \
  apt install -y cron && \
  apt install -y exim4 && \
  apt install -y vim.tiny && \
  apt install -y python3 && \
  apt install -y python3-pip && \
  update-alternatives --install /usr/bin/python python /usr/bin/python3 10 && \
  update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 10 && \
  pip install requests && \
  pip install Cheetah3 && \
  pip install pandas && \
  pip install influxdb && \
  sed -i \
    -e "s/dc_eximconfig_configtype='local'/dc_eximconfig_configtype='satellite'/" \
    -e "s/dc_smarthost=''/dc_smarthost='${SMARTHOST}'/" \
    -e "s/dc_readhost=''/dc_readhost='${MAILDOMAIN}'/" \
    /etc/exim4/update-exim4.conf.conf && \
  env DEBIAN_FRONTEND=noninteractive dpkg-reconfigure -f debconf exim4-config && \
  mkdir -p ${APP_DIR} && \
  useradd -d ${APP_DIR} -u 1000 user


COPY crontab ${APP_DIR}/
COPY *.py ${APP_DIR}/

RUN \
  ln -s /etc/crontab ${APP_DIR}/crontab 

VOLUME ${APP_DIR}

# USER 1000:1000
WORKDIR ${APP_DIR}

CMD [ "/usr/sbin/cron", "-f" ]