In the documentation, we give this configuration for MinIO;

storage:
  s3:
    flavor: minio
    endpoint: http://127.0.0.1:9000

But the s3 client fails to connect to MinIO and asks for a region. We should add a region in the config example. A user set a fake value "us-east-1" and it worked. I'm wondering if a random value is accepted too.

storage:
  s3:
    flavor: minio
    region: us-east-1
    endpoint: http://127.0.0.1:9000