service: app image: dhh/app servers: web_chicago: traefik: true hosts: - 1.1.1.1 - 1.1.1.2 web_tokyo: traefik: true hosts: - 1.1.1.3 - 1.1.1.4 env: REDIS_URL: redis://x/y registry: server: registry.digitalocean.com username: user password: pw primary_role: web_tokyo