add README

Signed-off-by: encalada <[email protected]>

github-webhook/README.md

@@ -0,0 +1,24 @@
+# Integrating IBM Cloud Code Engine with Github and Event Notifications
+
+Automating software deployment upon changes in your Git repository isn't  a novel idea. In IBM Cloud Code Engine, we provide samples like [Github](https://github.com/IBM/CodeEngine/tree/main/github) or [Github Action Workflows](https://github.com/IBM/CodeEngine/tree/main/github-action-workflows), enabling users to respond to changes in their repositories through Code Engine workloads.
+
+Given the importance of automated continuous deployments for cloud-native applications, this blog post delves deeper into the topic and proposes a new architecture. 
+
+By integrating, Git, Code Engine and IBM Cloud [Event Notifications](https://cloud.ibm.com/docs/event-notifications?topic=event-notifications-getting-started), we can offer users an end-to-end workflow from changes in Git to notifications across multiple destinations, including a Code Engine Job.
+
+## Architecture
+
+Our starting point is Git. Cloud Native Applications code is commonly hosted in version control systems like Git. Through Github [webhooks](https://docs.github.com/en/webhooks), changes such as `push` events(_e.g. commiting to your main branch_) can trigger integrations to take responsive actions.
+
+Knowing when these events occur leads us to the question; what actions can we take? Before addressing this, let's consider who should be notified about such actions.
+
+
+## Using IBM Cloud Event Notifications
+
+
+## Tell me more!
+
+## Try It!
+
+
+

github-webhook/cmd/builder/main.go

@@ -140,7 +140,7 @@ func main() {
 		l.Info("non knative services found, that match the image output", "namespace", ns, "image", imageOutput)
 	} else {
 		l.Info("A matching knative service was found", "namespace", ns, "image", imageOutput)
-		deleteService(ctx, servingClient, svc)
+		updateService(ctx, servingClient, svc)
 	}
 }
 
@@ -229,22 +229,21 @@ func findService(ctx context.Context, servingClient *serving.ServingV1Client, na
 		return nil, err
 	}
 
-	for i := range services.Items {
-		var service = services.Items[i]
-
-		if userImage, ok := service.Annotations[userImageAnnotation]; ok {
-			if userImage == image {
-				return &service, nil
+	for _, ksvc := range services.Items {
+		if len(ksvc.Spec.Template.Spec.Containers) > 0 {
+			userContainer := ksvc.Spec.Template.Spec.Containers[0]
+			if userContainer.Image == image {
+				return &ksvc, nil
 			}
 		}
 	}
 
 	return nil, nil
 }
 
-func deleteService(ctx context.Context, servingClient *serving.ServingV1Client, service *servingv1.Service) {
+func updateService(ctx context.Context, servingClient *serving.ServingV1Client, service *servingv1.Service) {
 	l := *logger
-	l.Info("deleting Knative servive to force a new revision", "namespace", service.Namespace, "name", service.Name)
+	l.Info("updating Knative servive to force a new revision", "namespace", service.Namespace, "name", service.Name)
 
 	annotations := service.Spec.Template.GetAnnotations()
 	if annotations == nil {