Usage:
TELEGRAM_APITOKEN=1117481160:ABHQTxZZVhj2HRwFXAm11yYXcHCo6Dpe444 docker-compose up -d
The bot will repeat messages 3 times whose length is no greater than 10 and ends with "！"
If you want to use it in a group and receive all messages, don't forget to /setprivacy at BotFather.