version: "3.7"
services:
  squid:
    deploy:
      placement:
        constraints: [node.labels.com.sigyl.git-stack == yes]
      replicas: 1
      restart_policy:
        condition: any
    image: sameersbn/squid:3.5.27-2
    volumes:
      - squid-cache:/var/spool/squid
    ports:
      - 3128:3128
    networks:
      - appnet
      - externalnet
volumes:
  squid-cache:
  squid-3-cache:

networks:
  appnet:
    driver: overlay
  externalnet:
    driver: overlay
    external: true