参考訳：Docker ネットワーク設計哲学 ref: http://qiita.com/zembutsu/items/59463017e1e82b8c22cb

file0.yml

$ cat docker-compose.yml
version: "2"
services:
  voting-app:
      image: docker/example-voting-app-voting-app
      ports:
      - "80"
      networks:
      - votenet
  result-app:
      image: docker/example-voting-app-result-app
      ports:
      - "80"
      networks:
      - votenet
  worker:
      image: docker/example-voting-app-worker
      networks:
      - votenet
  redis:
      image: redis
      networks:
      - votenet
  db:
      image: postgres:9.4
      volumes:
      - "db-data:/var/lib/postgresql/data"
      networks:
      - votenet
volumes:
  db-data:
networks:
  votenet:

file1.yml

$ docker-compose up -d
Creating network "voteapp_votenet" with the default driver
Starting db
Starting redis
Starting voteapp_worker_1
Starting voteapp_voting-app_1
Starting voteapp_result-app_1

file2.txt

$ docker network inspect - voteapp_votenet
[
      {
      "Name": "- voteapp_votenet",
      "Id": "7be1879036b217c072c824157e82403081ec60edfc4f34599674444ba01f0c57",
      "Scope": "local",
      "Driver": "bridge",
      "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
            {
                  "Subnet": "172.19.0.0/16",
                  "Gateway": "172.19.0.1/16"
            }
            ]
      },
      ...
      ...
      ...
]

file3.txt

$ docker-compose down

file4.txt

$ docker network create -d overlay --subnet=70.28.0.0/16 --gateway=70.28.5.254 voteapp_votenet
6d215748f300a0eda3878e76fe99e717c8ef85a87de0779e379c92af5d615b88

file5.yml

$ cat docker-compose.override.yml
version : "2"
networks:
  votenet:
      driver: overlay
      ipam:
      config:
      - subnet: 70.28.0.0/16
      gateway: 70.28.5.254

file6.txt

$ docker-compose up -d
Creating network "- voteapp_votenet" with driver "overlay"
Starting voteapp_worker_1
Starting redis
Starting db
Starting voteapp_voting-app_1
Starting voteapp_result-app_1

file7.txt

$ docker network inspect - voteapp_votenet
[
      {
      "Name": "- voteapp_votenet",
      "Id": "b510c0affb2289548a07af7cc7e3f778987fc43812ac0603c5d01b7acf6c12be",
      "Scope": "global",
      "Driver": "overlay",
      "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
            {
                  "Subnet": "70.28.0.0/16",
                  "Gateway": "70.28.5.254"
            }
            ]
      },
      ...
      ...
      ...
]