fix: more reliable syncing

cli/recipe/sync.go

@@ -177,28 +177,11 @@ will know that things are likely to change.
 		}
 
 		mainService := "app"
-		var services []string
-		hasAppService := false
-		for _, service := range recipe.Config.Services {
-			services = append(services, service.Name)
-			if service.Name == "app" {
-				hasAppService = true
-				logrus.Debugf("detected app service in %s", recipe.Name)
-			}
-		}
-
-		if !hasAppService {
-			logrus.Fatalf("%s has no main app service?", recipe.Name)
-		}
-
-		logrus.Debugf("selecting %s as the service to sync version label", mainService)
-
 		label := fmt.Sprintf("coop-cloud.${STACK_NAME}.version=%s", nextTag)
 		if !internal.Dry {
-			if err := recipe.UpdateLabel(mainService, label); err != nil {
+			if err := recipe.UpdateLabel("compose.y*ml", mainService, label); err != nil {
 				logrus.Fatal(err)
 			}
-			logrus.Infof("synced label %s to service %s", label, mainService)
 		} else {
 			logrus.Infof("dry run: not syncing label %s for recipe %s", nextTag, recipe.Name)
 		}