Descriptor

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Descriptor",
  "type": "object",
  "description": "Docker V2 image layer descriptor.",
  "properties": {
    "mediaType": {
      "type": "string",
      "description": "Layer media type."
    },
    "size": {
      "type": "integer",
      "description": "Layer size."
    },
    "digest": {
      "type": "string",
      "description": "Layer digest."
    },
    "urls": {
      "type": "array",
      "description": "Specifies a list of URLs from which this object may be downloaded."
    },
    "annotations": {
      "type": "object",
      "description": "Additional information about the descriptor."
    }
  }
}