Driver-specific options (see S3DriverOptions).
OptionalbaseAn optional base URL used by FileSystem.url for public assets.
Which driver backs this disk.
The disk name, used to resolve it via storage.disk(name).
OptionalrootThe root directory (local) or bucket/prefix (object store) all paths are resolved against.
Options common to every disk, plus the driver selector. Driver-specific options live alongside (e.g.
bucket/regionfor S3); the driver reads what it needs.