Using Microsoft Container Registry as Trusted Package Management repository

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.

Steps to reproduce

After Sydney's Trusted Package Management presentation during PSConfEU 2024 Minicon, I was curious to give it a try. Unfortunately, I'm stumbling on the following error message:

Install-PSResource: Repository 'mar' is not a known repository type that is supported. Please file an issue for support at https://github.com/PowerShell/PSResourceGet/issues

The steps to reproduce the issue:

1. Run the following command: Register-PSResourceRepository -Name mar -Uri 'https://mcr.microsoft.com' -Trusted
2. Install the module by running the following: Install-PSResource -Name Az.Accounts -Repository mar

The error message appears. Did I miss a step while registering or installing?

Expected behavior

Should install Az.Accounts module using MAR as repository.

Actual behavior

See description.

Error details

No response

Environment data

ModuleType Version    PreRelease Name                                ExportedCommands
---------- -------    ---------- ----                                ----------------
Binary     1.1.0      preview2   Microsoft.PowerShell.PSResourceGet  {Compress-PSResource, Find-PSResource, Get-Instal…

Key   : PSVersion
Value : 7.4.5
Name  : PSVersion


Key   : PSEdition
Value : Core
Name  : PSEdition


Key   : GitCommitId
Value : 7.4.5
Name  : GitCommitId


Key   : OS
Value : Microsoft Windows 10.0.26100
Name  : OS


Key   : Platform
Value : Win32NT
Name  : Platform


Key   : PSCompatibleVersions
Value : {1.0, 2.0, 3.0, 4.0…}
Name  : PSCompatibleVersions


Key   : PSRemotingProtocolVersion
Value : 2.3
Name  : PSRemotingProtocolVersion


Key   : SerializationVersion
Value : 1.1.0.1
Name  : SerializationVersion


Key   : WSManStackVersion
Value : 3.0
Name  : WSManStackVersion

Visuals

No response

Reproduce the issue with Register-PSResourceRepository -Name mar -Uri 'https://mcr.microsoft.com' -Trusted, then Install-PSResource -Name Az.Accounts -Repository mar. Trace how repository types are recognized and compare the Microsoft Container Registry URI with supported repository types. Done means Az.Accounts installs from MAR without the unknown repository type error.