Update artifact manifest spec to make mediaType REQUIRED (#101)

Fixes: #100 Signed-off-by: Michael Brown <brownxmi@amazon.com>
oras-project · Jun 8, 2022 · 7c0b1c0 · 7c0b1c0
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diff --git a/artifact-manifest.md b/artifact-manifest.md
@@ -14,7 +14,8 @@ The `artifact.manifest` provides an optional collection of `blobs`, an optional
 
 - **`mediaType`** *string*
 
-  This field contains the `mediaType` of this document, differentiating from [image-manifest][oci-image-manifest-spec] and [image-index][oci-image-index]. The `mediaType` for this manifest type MUST be `application/vnd.cncf.oras.artifact.manifest.v1+json`, where the version WILL change to reflect newer versions.
+  This REQUIRED field contains the `mediaType` of this document, differentiating from [image-manifest][oci-image-manifest-spec] and [image-index][oci-image-index]. 
+  The `mediaType` for this manifest type MUST be `application/vnd.cncf.oras.artifact.manifest.v1+json`, where the version WILL change to reflect newer versions.
 
 - **`artifactType`** *string*
 

diff --git a/examples/net-monitor-oci-image.json b/examples/net-monitor-oci-image.json
@@ -1,4 +1,5 @@
 {
+  "mediaType": "application/vnd.oci.image.manifest.v1+json",
   "schemaVersion": 2,
   "config": {
     "mediaType": "application/vnd.oci.image.config.v1+json",