FROM debian:bullseye

ARG APP_DIR="/opt/app"

RUN \
  apt update && \
  apt install -y cron && \
  mkdir -p ${APP_DIR} && \
  useradd -d ${APP_DIR} -u 1000 user

COPY crontab /etc/
COPY testscript.sh ${APP_DIR}/

# USER 1000:1000
WORKDIR ${APP_DIR}

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