Azure Container Registry (ACR) is a cloud-based service for managed, private registries based on Docker Registry 2.0. You can use it to create and maintain Docker container registries in the Azure cloud, using them to manage and store Docker images and artifacts privately.
ACR can integrate with existing container-based application development and deployment pipelines. You can create a container image in Azure by using Azure Container Registry Tasks. This lets you fully automate your builds using triggers like base-image updates and source code commits or build images on-demand .