使用镜像containrrr/watchtower docker-compose.yml 12345678910version: '3'services: watchtower: image: containrrr/watchtower:latest container_name: watchtower volumes: - /var/run/docker.sock:/var/run/docker.sock # 访问 Docker 守护进程 restart: unless-stopped # 自动重启容器 command: --schedule "0 0 3 * * *" --cleanup # 每天凌晨 3 点执行更新,并删除旧镜像