使用 Docker 建置 PostgreSQL 資料庫

docker hub 有範例，但我還是紀錄一下。

# Use postgres/example user/password credentials
version: '3.1'

services:

  db:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example

  adminer:
    image: adminer
    restart: always
    ports:
      - 8080:8080

add host

adminer:
  image: adminer
  restart: always
  ports:
    - 8080:8080
  extra_hosts:
    - "oracle:162.242.195.82"
    - "finvc:172.31.70.174"

https://github.com/compose-spec/compose-spec/blob/master/spec.md#extra_hosts