#!/usr/bin/env bash

# Prior art:
# - https://git.io/fjNOg
# - https://blog.knoldus.com/running-a-cron-job-in-docker-container/

declare -p | grep -Ev 'BASHOPTS|BASH_VERSINFO|EUID|PPID|SHELLOPTS|UID' > /container.env

{ for cron_job in "$@"; do echo -e "SHELL=/bin/bash
BASH_ENV=/container.env
${cron_job} > /proc/1/fd/1 2>/proc/1/fd/2"; done } \
    | sed --regexp-extended 's/\\(.)/\1/g' \
    | crontab -
crontab -l
exec cron -f -l -L 15