config.json

{
  "development": {
    "username": "postgres",
    "password": "",
    "database": "testdev",
    "host": "127.0.0.1",
    "dialect": "postgres"
  },
  "test": {
    "username": "postgres",
    "password": "",
    "database": "testprod",
    "host": "127.0.0.1",
    "dialect": "postgres"
  },
  "production": {
    "use_env_variable": "DATABASE_URL",
    "dialect": "postgres",
    "logging": false
  }
}