networks:
  proxy:
    external: true

services:
  portainer:
    image: portainer/portainer-ce:alpine-sts
    container_name: portainer
    restart: unless-stopped
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ./data:/data
    networks:
      - proxy
    ports:
      - 9010:9000 # optional if behind reverse proxy.
    labels:
      com.centurylinklabs.watchtower.enable: true