Update articles/deployment-environments/how-to-configure-extensibility-terraform-container-image.md

Author: RoseHJM

articles/deployment-environments/how-to-configure-extensibility-terraform-container-image.md

@@ -180,7 +180,7 @@ docker build . -t {YOUR_REGISTRY}.azurecr.io/customImage:1.0.0
 
 ## Push the Docker image to a registry
 
-In order to use custom images, you need to store them in a registry like Azure Container Registry (ACR) or Docker Hub. 
+In order to use custom images, you need to store them in a container registry. Azure Container Instances (ACR) is highly recommended for that. Due to its tight integration with ADE, the image can be published without allowing public anonymous pull access.
 
 To use a custom image stored in a public registry, you need to enable anonymous image pull. This way, Azure Deployment Environments can access your custom image to execute in our container.