simple-cron-docker/Dockerfile

FROM debian:bullseye

ARG APP_DIR="/opt/app"

RUN \
  apt update && \
  apt install -y cron && \
  apt install -y openssh-server && \
  apt install -y curl && \
  mkdir -p ${APP_DIR} && \
  useradd -d ${APP_DIR} -u 1000 user && \
  mkdir -p ${APP_DIR}/.ssh && \
  curl https://home.hottis.de/mysshkeys.pub > ${APP_DIR}/.ssh/authorized_keys


COPY crontab /etc/
COPY testscript.sh ${APP_DIR}/
COPY start.sh ${APP_DIR}/
COPY sshd_config /etc/ssh

RUN \
  mkdir -p /var/run/sshd && \
  /usr/bin/ssh-keygen -A

EXPOSE 2222


# USER 1000:1000
WORKDIR ${APP_DIR}

CMD [ "/opt/app/start.sh" ]