improve lookup when no pipeline name

CHANGELOG.md

@@ -1,7 +1,12 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## 1.0.1
+### Fixed
+
+- handle pipelines with missing names
+
+## 1.0.0
 ### Added
 
 - ported docker pipelines to runner-go framework

engine/resource/lookup.go

@@ -25,5 +25,7 @@ func Lookup(name string, manifest *manifest.Manifest) (*Pipeline, error) {
 
 // helper function returns true if the name matches.
 func isNameMatch(a, b string) bool {
-	return a == b || (a == "" && b == "default")
+	return a == b ||
+		(a == "" && b == "default") ||
+		(b == "" && a == "default")
 }