Move reference to pkg/reference

Signed-off-by: Derek McGowan <derek@mcg.dev>

pkg/reference/docker/normalize_deprecated.go

@@ -0,0 +1,55 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package docker
+
+import (
+	"github.com/distribution/reference"
+)
+
+// ParseNormalizedNamed parses a string into a named reference
+// transforming a familiar name from Docker UI to a fully
+// qualified reference. If the value may be an identifier
+// use ParseAnyReference.
+//
+// Deprecated: use [reference.ParseNormalizedNamed].
+func ParseNormalizedNamed(s string) (reference.Named, error) {
+	return reference.ParseNormalizedNamed(s)
+}
+
+// ParseDockerRef normalizes the image reference following the docker convention,
+// which allows for references to contain both a tag and a digest.
+//
+// Deprecated: use [reference.ParseDockerRef].
+func ParseDockerRef(ref string) (reference.Named, error) {
+	return reference.ParseDockerRef(ref)
+}
+
+// TagNameOnly adds the default tag "latest" to a reference if it only has
+// a repo name.
+//
+// Deprecated: use [reference.TagNameOnly].
+func TagNameOnly(ref reference.Named) reference.Named {
+	return reference.TagNameOnly(ref)
+}
+
+// ParseAnyReference parses a reference string as a possible identifier,
+// full digest, or familiar name.
+//
+// Deprecated: use [reference.ParseAnyReference].
+func ParseAnyReference(ref string) (reference.Reference, error) {
+	return reference.ParseAnyReference(ref)
+}