domain_whitelist: Array of regular expressions. Always escape your dots and end your strings.
check_whitelist: Whether to check the domain_whitelist.

When check_whitelist is set, only images from URLs matching a regex in the domain_whitelist array are accepted for local storage.

thumbnail_width: Maximum width of the thumbnail in pixels. Defaults to global [thumbnail][width].
thumbnail_height: Maximum height of the thumbnail in pixels. Defaults to global [thumbnail][height].
crop: Crop to the size (not preserving aspect ratio). Defaults to global [thumbnail][crop].
max_size: Max media size. Anything bigger than this is rejected. Defaults to global [attachments][file_quota].
store_original: Whether to maintain a copy of the original media or only a thumbnail of it. Defaults to false.

Example

addPlugin('StoreRemoteMedia', [
    'domain_whitelist' => [
        '^i\d*\.ytimg\.com$' => 'YouTube',
        '^i\d*\.vimeocdn\.com$' => 'Vimeo'
    ],
    'check_whitelist' => true,
]);