Update container runtime not found exception message

[DamianEdwards]

#3190

Microsoft Reviewers: Open in CodeFlow

[DamianEdwards]

/backport to release/8.0-preview5

[github-actions]

Started backporting to release/8.0-preview5: https://github.com/dotnet/aspire/actions/runs/8456460198

[timheuer]

lgtm

[balachir]

@DamianEdwards for the scenario described in #3190, with neither docker or podman installed, with your change, the exception message will still output Container runtime 'docker' could not be found. But now, there will be the additional aka.ms link with more info. Correct?

How does the '{0}' in the error message resolve to 'docker'? Is that because DCP tries to default to docker?

[DamianEdwards]

@balachir From my understanding, DCP attempts to auto-detect which container runtime is installed and use that, but in the case where the error coming back doesn't have a container runtime name, Aspire.Hosting assumes Docker as the name and then adds the link now.