container-server/services/watchtower/docker-compose.yml

version: '3.7'

# https://hub.docker.com/r/containrrr/watchtower
# https://containrrr.dev/watchtower/

services:
  watchtower:
    image: containrrr/watchtower
    container_name: watchtower
    restart: "${RESTART:-no}"
    domainname: ${BASE_DOMAIN}
    environment:
      - TZ=${TIMEZONE}
      - WATCHTOWER_SCHEDULE=0 0 4 * * *
      - WATCHTOWER_CLEANUP=true

      - WATCHTOWER_NOTIFICATIONS=email
      - WATCHTOWER_NOTIFICATION_EMAIL_FROM=watchtower@${BASE_DOMAIN}
      - WATCHTOWER_NOTIFICATION_EMAIL_TO=admin@${BASE_DOMAIN}
      - WATCHTOWER_NOTIFICATION_EMAIL_SERVER=post.${BASE_DOMAIN}
      - WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PORT=25
      - WATCHTOWER_NOTIFICATION_EMAIL_DELAY=20
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ~/.docker/config.json:/config.json:ro
    networks:
      - mail