hujingnb/crontab repository overview

docker run -d \
  hujingnb/crontab \
  "* * * * * root command1" \
  "* * * * * root command2" 

version: '3.1'

services:
  crontab:
    image: hujingnb/crontab
    command:
      - "* * * * * root command1"
      - "* * * * * root command2"