Update container-instances/using-azure-container-registry-mi.md

[m8yng]

Added note about creating managed identity access ACR only possible with ARM template or az cli commands

> [!NOTE] 
> Managed identity access to a private Azure Container Registry can be configured only via an ARM/Bicep template or the latest Azure CLI.

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[v-regandowner]

@tomvcassidy - Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
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[Copilot]

Pull Request Overview

Adds important configuration guidance for managed identity access to private Azure Container Registry by clarifying that this feature is only available through ARM/Bicep templates or Azure CLI, not through other Azure management interfaces.

• Added a note highlighting the ARM/Bicep template or Azure CLI requirement for configuring managed identity access to private ACR

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[v-dirichards]

@tomvcassidy Could you review this proposed update to your article and enter #sign-off in a comment if it's ready to merge?

Thanks!

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[v-dirichards]

@tomvcassidy

Can you review this old PR and determine whether it needs to be closed or merged?

@MicrosoftDocs/public-repo-pr-review-team

[tomvcassidy]

#sign-off