fix: more reliable syncing

pkg/compose/compose.go

@@ -130,11 +130,18 @@ func UpdateLabel(pattern, serviceName, label, recipeName string) error {
 				old := fmt.Sprintf("coop-cloud.${STACK_NAME}.version=%s", value)
 				replacedBytes := strings.Replace(string(bytes), old, label, -1)
 
+				if old == label {
+					logrus.Warnf("%s is already set, nothing to do?", label)
+					return nil
+				}
+
 				logrus.Debugf("updating %s to %s in %s", old, label, compose.Filename)
 
 				if err := ioutil.WriteFile(compose.Filename, []byte(replacedBytes), 0644); err != nil {
 					return err
 				}
+
+				logrus.Infof("synced label %s to service %s", label, serviceName)
 			}
 		}