Public preview: Caching in ACR

Caching for ACR is a public preview feature within Azure Container Registry. This feature allows you to cache container images. Caching for ACR allows you to create a cache rule and cache container images from Docker Hub and Microsoft Artifact Registry. Caching images lets you pull images directly from your cache ensuring faster and more reliable pull operations. To learn more, visit: <https://aka.ms/acr/cache> * Container Registry * Features * [ Container Registry](https://azure.microsoft.com/en-gb/products/container-registry/)