azure-sdk-for-python: The image 'x' in container group 'y' is not accessible. Please check the image and registry credential.

• azure-mgmt-containerinstance
• 7.0.0
• Windows
• Python 3.8.7

Describe the bug Received message ‘Please check the image and registry credential.’ when attempting to create a container instance using an image in an Azure Container Registry.

To Reproduce Steps to reproduce the behavior:

    # Create aci_client using default credentials loaded from Environment Variables
    credential = DefaultAzureCredential(
        exclude_cli_credential=True,
        exclude_visual_studio_code_credential=True,
        exclude_shared_token_cache_credential=True,
        exclude_interactive_browser_credential=True,
     )

    aci_client = ContainerInstanceManagementClient(credential, subscription_id)


    # Create Container and pass in Environment Variables
    container_resource_requests = ResourceRequests(memory_in_gb=1.5, cpu=1.0)
    container_resource_requirements = ResourceRequirements(
        requests=container_resource_requests)
    container = Container(name=container_name,
                          image=container_image_name,
                          resources=container_resource_requirements,
                          command=start_command_line.split(),
                          environment_variables=[env_var_1, env_var_2])

    # Configure the container group
    group = ContainerGroup(location=resource_group.location,
                           containers=[container],
                           os_type=OperatingSystemTypes.linux,
                           restart_policy=ContainerGroupRestartPolicy.never)

    # Create the container group
    result = aci_client.container_groups.begin_create_or_update(resource_group.name,
                                                          container_group_name,
                                                          group)

    # Error azure.core.exceptions.HttpResponseError: (InaccessibleImage) The image 'x' in container group 'y' is not accessible. Please check the image and registry credential.

Expected behavior The container instance should load the image from the Registry

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