version: "3.8"

services:
  docker-cleanup:
    image: docker.io/docker:latest
    cap_drop:
      - ALL
    
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    
    entrypoint: []
    command:
      - "sh"
      - "-euc"
      - |
        while true; do
          docker image prune --all --force
          docker system prune --all --force --volumes
          
          sleep 86400
          ## 1 day, in seconds
        done
    
    deploy:
      mode: global
      
      resources:
        limits:
          cpus: "1.0"
          memory: "1G"
      
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s