{
  "dev": {
    "driver": "pg",
    "user": "postgres",
    "password": "password",
    "host": "127.0.0.1",
    "database": "sequelize_development"
  },
  "staging": {
    "driver": "pg",
    "host": "ec2-54-197-241-64.compute-1.amazonaws.com",
    "database": "db4okr1k6l0859",
    "user": "tijjyppdfivteg",
    "port": 5432,
    "password": "7-tZdjicDfXFBjzhd5LfS1HYCP",
    "native": true 
  }
}

{
  "development": {
    "ENV": "POSTGRES_URL"
  },
  "staging": {
    "ENV": "POSTGRES_URL"
  },
  "production": {
    "ENV": "POSTGRES_URL"
  }
}

Make sequelize config use DATABASE_URL ENV
[FEATURE] Make sequelize config use DATABASE_URL ENV
