Add two constants to running container media type (#734)

Signed-off-by: Valentin Delaye <jonesbusy@users.noreply.github.com>

Author: jonesbusy

src/main/java/land/oras/utils/Const.java

@@ -194,6 +194,16 @@ private Const() {
      */
     public static final String DEFAULT_MANIFEST_MEDIA_TYPE = "application/vnd.oci.image.manifest.v1+json";
 
+    /**
+     * Media type for config of running container
+     */
+    public static final String CONFIG_RUNNING_CONTAINER_MEDIA_TYPE = "application/vnd.oci.image.config.v1+json";
+
+    /**
+     * Media type for config of running docker
+     */
+    public static final String CONFIG_RUNNING_DOCKER_MEDIA_TYPE = "application/vnd.docker.container.image.v1+json";
+
     /**
      * The default accept type for the manifest
      */

src/test/java/land/oras/utils/ConstTest.java

@@ -36,5 +36,7 @@ void shouldValidateAnnotations() {
         assertEquals("org.opencontainers.image.revision", Const.ANNOTATION_REVISION);
         assertEquals("org.opencontainers.image.created", Const.ANNOTATION_CREATED);
         assertEquals("org.opencontainers.image.ref.name", Const.ANNOTATION_REF);
+        assertEquals("application/vnd.oci.image.config.v1+json", Const.CONFIG_RUNNING_CONTAINER_MEDIA_TYPE);
+        assertEquals("application/vnd.docker.container.image.v1+json", Const.CONFIG_RUNNING_DOCKER_MEDIA_TYPE);
     }
 }