docker-stack.yml

---
version: '3.5'

services:

  drone-server:
    image: "${DRONE_SERVER_IMAGE:-drone/drone:0.8}"
    ports:
      - 8000:8000
    networks:
      - drone
    configs:
      - source: server-env
        target: /.env
    volumes:
      - drone-server-data:/var/lib/drone/
    deploy:
      placement:
        constraints:
          - node.role==worker
      replicas: 1
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s

  drone-agent:
    image: "${DRONE_AGENT_IMAGE:-drone/agent:0.8}"
    command: agent
    networks:
      - drone
#    depends_on:
#      - drone-server
    configs:
      - source: agent-env
        target: /.env
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    deploy:
      placement:
        constraints:
          - node.role==worker
      replicas: 3
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s
      update_config:
        parallelism: 1
        delay: 20s

networks:
  drone:
    driver: overlay

configs:
  server-env:
    file: ./.server-env
  agent-env:
    file: ./.agent-env

# see https://github.com/drone/drone/issues/2223
#secrets:
#  drone-secret:
#    file: ./awesome-secret

volumes:
  drone-server-data:
    external: true