Via the portal: https://docs.microsoft.com/en-us/azure/container-registry/container-registry-get-started-portal
Via Powershell: https://docs.microsoft.com/en-us/azure/container-registry/container-registry-get-started-powershell
Via Azure CLI: https://docs.microsoft.com/en-us/azure/container-registry/container-registry-get-started-azure-cli