upgrade libcompose to fbdac0a6a80837c63eb6c8f43514f7bb3f32df6c

vendor/github.com/docker/distribution/manifest/schema2/manifest.go

@@ -17,6 +17,9 @@ const (
 	// MediaTypeConfig specifies the mediaType for the image configuration.
 	MediaTypeConfig = "application/vnd.docker.container.image.v1+json"
 
+	// MediaTypePluginConfig specifies the mediaType for plugin configuration.
+	MediaTypePluginConfig = "application/vnd.docker.plugin.v0+json"
+
 	// MediaTypeLayer is the mediaType used for layers referenced by the
 	// manifest.
 	MediaTypeLayer = "application/vnd.docker.image.rootfs.diff.tar.gzip"

vendor/github.com/docker/distribution/manifest/versioned.go

@@ -1,8 +1,8 @@
 package manifest
 
-// Versioned provides a struct with the manifest schemaVersion and . Incoming
-// content with unknown schema version can be decoded against this struct to
-// check the version.
+// Versioned provides a struct with the manifest schemaVersion and mediaType.
+// Incoming content with unknown schema version can be decoded against this
+// struct to check the version.
 type Versioned struct {
 	// SchemaVersion is the image manifest schema that this image follows
 	SchemaVersion int `json:"schemaVersion"`