1 files changed, 17 insertions, 0 deletions
diff --git a/modules/packages/container/oci/reference.go b/modules/packages/container/oci/reference.go
new file mode 100644
index 0000000000..120ff122d4
--- /dev/null
+++ b/modules/packages/container/oci/reference.go
@@ -0,0 +1,17 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package oci
+
+import (
+	"regexp"
+)
+
+var referencePattern = regexp.MustCompile(`\A[a-zA-Z0-9_][a-zA-Z0-9._-]{0,127}\z`)
+
+type Reference string
+
+func (r Reference) Validate() bool {
+	return referencePattern.MatchString(string(r))
+}