{
  "description": "Definitions particular to OpenContainer Image Specification",
  "definitions": {
    "mediaType": {
      "id": "https://opencontainers.org/schema/image/mediaType",
      "type": "string",
      "pattern": "^[A-Za-z0-9][A-Za-z0-9!#$&-^_.+]{0,126}/[A-Za-z0-9][A-Za-z0-9!#$&-^_.+]{0,126}$"
    },
    "digest": {
      "description": "the cryptographic checksum digest of the object, in the pattern '<hash>:<hexadecimal digest>'",
      "type": "string",
      "pattern": "^[a-z0-9_+.-]+:[a-f0-9]+$"
    },
    "manifestDescriptor": {
      "id": "https://opencontainers.org/schema/image/manifestDescriptor",
      "type": "object",
      "required": [
        "mediaType",
        "size",
        "digest"
      ],
      "properties": {
        "mediaType": {
          "description": "the mediatype of the referenced object",
          "$ref": "#/definitions/mediaType"
        },
        "size": {
          "description": "the size in bytes of the referenced object",
          "$ref": "defs.json#/definitions/int64"
        },
        "digest": {
          "description": "the cryptographic checksum digest of the object, in the pattern '<hash>:<hexadecimal digest>'",
          "$ref": "#/definitions/digest"
        },
        "urls": {
          "description": "a list of urls from which this object may be downloaded",
          "type": "array",
          "items": {
            "type": "string",
            "format": "uri"
          }
        },
        "platform": {
          "id": "https://opencontainers.org/schema/image/platform",
          "type": "object",
          "required": [
            "architecture",
            "os"
          ],
          "properties": {
            "architecture": {
              "id": "https://opencontainers.org/schema/image/platform/architecture",
              "type": "string"
            },
            "os": {
              "id": "https://opencontainers.org/schema/image/platform/os",
              "type": "string"
            },
            "os.version": {
              "id": "https://opencontainers.org/schema/image/platform/os.version",
              "type": "string"
            },
            "os.features": {
              "id": "https://opencontainers.org/schema/image/platform/os.features",
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "variant": {
              "type": "string"
            },
            "features": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        },
        "annotations": {
          "id": "https://opencontainers.org/schema/image/descriptor/annotations",
          "$ref": "#/definitions/annotations"
        }
      }
    },
    "annotations": {
      "id": "https://opencontainers.org/schema/image/annotations",
      "oneOf": [
        {
          "$ref": "defs.json#/definitions/mapStringString"
        },
        {
          "type": "null"
        }
      ]
    }
  }
}