media type of oci-layout as key word for schema map

As we have defined media type for oci-layout, now we can use it as the
key word in schema map.

Signed-off-by: xiekeyang <[email protected]>

Author: xiekeyang

image-layout.md

@@ -133,7 +133,7 @@ This section defines the `application/vnd.oci.layout.header.v1+json` [media type
 
 ### oci-layout Example
 
-```json,title=OCI%20Layout&mediatype=oci%2Dlayout
+```json,title=OCI%20Layout&mediatype=application/vnd.oci.layout.header.v1%2Bjson
 {
     "imageLayoutVersion": "1.0.0"
 }

schema/schema.go

@@ -22,12 +22,12 @@ import (
 
 // Media types for the OCI image formats
 const (
-	ValidatorMediaTypeDescriptor  Validator     = v1.MediaTypeDescriptor
-	ValidatorMediaTypeManifest    Validator     = v1.MediaTypeImageManifest
-	ValidatorMediaTypeImageIndex  Validator     = v1.MediaTypeImageIndex
-	ValidatorMediaTypeImageConfig Validator     = v1.MediaTypeImageConfig
-	ValidatorTypeImageLayout      Validator     = v1.ImageLayoutFile
-	ValidatorMediaTypeImageLayer  unimplemented = v1.MediaTypeImageLayer
+	ValidatorMediaTypeDescriptor   Validator     = v1.MediaTypeDescriptor
+	ValidatorMediaTypeLayoutHeader Validator     = v1.MediaTypeLayoutHeader
+	ValidatorMediaTypeManifest     Validator     = v1.MediaTypeImageManifest
+	ValidatorMediaTypeImageIndex   Validator     = v1.MediaTypeImageIndex
+	ValidatorMediaTypeImageConfig  Validator     = v1.MediaTypeImageConfig
+	ValidatorMediaTypeImageLayer   unimplemented = v1.MediaTypeImageLayer
 )
 
 var (
@@ -37,11 +37,11 @@ var (
 
 	// specs maps OCI schema media types to schema files.
 	specs = map[Validator]string{
-		ValidatorMediaTypeDescriptor:  "content-descriptor.json",
-		ValidatorMediaTypeManifest:    "image-manifest-schema.json",
-		ValidatorMediaTypeImageIndex:  "image-index-schema.json",
-		ValidatorMediaTypeImageConfig: "config-schema.json",
-		ValidatorTypeImageLayout:      "image-layout-schema.json",
+		ValidatorMediaTypeDescriptor:   "content-descriptor.json",
+		ValidatorMediaTypeLayoutHeader: "image-layout-schema.json",
+		ValidatorMediaTypeManifest:     "image-manifest-schema.json",
+		ValidatorMediaTypeImageIndex:   "image-index-schema.json",
+		ValidatorMediaTypeImageConfig:  "config-schema.json",
 	}
 )
 

specs-go/v1/mediatype.go

@@ -18,6 +18,9 @@ const (
 	// MediaTypeDescriptor specifies the media type for a content descriptor.
 	MediaTypeDescriptor = "application/vnd.oci.descriptor.v1+json"
 
+	// MediaTypeLayoutHeader specifies the media type for the oci-layout.
+	MediaTypeLayoutHeader = "application/vnd.oci.layout.header.v1+json"
+
 	// MediaTypeImageManifest specifies the media type for an image manifest.
 	MediaTypeImageManifest = "application/vnd.oci.image.manifest.v1+json"