How to scale container instance with this template as Microsoft.App/containerApps is not available for Us Gov

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[acilinuxpublicipcontainergroup](https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#)

### Issue Details

### Repro steps (*if necessary, delete otherwise*)
1. With this template, how to manually scale the container instance?
i.e. how to do the equivalent of set the "scale" property in
in the template https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#

Start by reviewing the referenced deployment template schema and the Microsoft.App/containerApps resource mentioned in the issue, then check Azure Government support for that resource. Done would mean documenting a supported way to scale the container instance with this template, or clearly stating that the requested resource is unavailable.

Written by the indexing model from the issue text.