--- networks: dns_local_net: external: true services: ntp: image: dockurr/chrony container_name: ntp1 environment: NTP_SERVERS: "0.pool.ntp.org,1.pool.ntp.org,2.pool.ntp.org,3.pool.ntp.org" TZ: "America/Vancouver" ports: - 123:123/udp restart: on-failure networks: dns_local_net: ipv4_address: 10.200.53.251