allow dot in repo name

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)

registry/registry.go

@@ -101,17 +101,12 @@ func ResolveRepositoryName(reposName string) (string, string, error) {
 		return "", "", ErrInvalidRepositoryName
 	}
 	nameParts := strings.SplitN(reposName, "/", 2)
-	if !strings.Contains(nameParts[0], ".") && !strings.Contains(nameParts[0], ":") &&
-		nameParts[0] != "localhost" {
+	if len(nameParts) == 1 || (!strings.Contains(nameParts[0], ".") && !strings.Contains(nameParts[0], ":") &&
+		nameParts[0] != "localhost") {
 		// This is a Docker Index repos (ex: samalba/hipache or ubuntu)
 		err := validateRepositoryName(reposName)
 		return IndexServerAddress(), reposName, err
 	}
-	if len(nameParts) < 2 {
-		// There is a dot in repos name (and no registry address)
-		// Is it a Registry address without repos name?
-		return "", "", ErrInvalidRepositoryName
-	}
 	hostname := nameParts[0]
 	reposName = nameParts[1]
 	if strings.Contains(hostname, "index.docker.io") {

registry/registry_test.go

@@ -146,6 +146,13 @@ func TestResolveRepositoryName(t *testing.T) {
 	}
 	assertEqual(t, ep, u, "Expected endpoint to be "+u)
 	assertEqual(t, repo, "private/moonbase", "Expected endpoint to be private/moonbase")
+
+	ep, repo, err = ResolveRepositoryName("ubuntu-12.04-base")
+	if err != nil {
+		t.Fatal(err)
+	}
+	assertEqual(t, ep, IndexServerAddress(), "Expected endpoint to be "+IndexServerAddress())
+	assertEqual(t, repo, "ubuntu-12.04-base", "Expected endpoint to be ubuntu-12.04-base")
 }
 
 func TestPushRegistryTag(t *testing.T) {