docker-compose.yml

version: "3"
services:
  watchtower:
    image: containrrr/watchtower
    restart: unless-stopped
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - /home/hoster/watchtower/config.json:/config.json # optional. Used to log into a private registry
      - /etc/localtime:/etc/localtime:ro # optional. Used to sync time with host
    command: container1 container2 container3 # optional. Only watch specific containers
    environment:
      - WATCHTOWER_NOTIFICATIONS=shoutrrr
      - WATCHTOWER_NOTIFICATION_URL=telegram://HTTP_API_TOKEN@telegram/?channels=CHAT_ID
      - WATCHTOWER_CLEANUP=true # optional. Remove old images after updating