[Mobile] Maccatalyst can't use dotnet run dll

[lld1995]

Current behavior

I use dotnet MyApp.Mobile.dll ,but it shows error:
A fatal error was encountered. The library 'libhostpolicy.dylib' required to execute the application was not found in '/Users/west/Documents/MyApp/MyApp.Mobile/bin/Debug/net7.0-maccatalyst/maccatalyst-x64/'.
Failed to run as a self-contained app.

• The application was run as a self-contained app because '/Users/west/Documents/MyApp/MyApp.Mobile/bin/Debug/net7.0-maccatalyst/maccatalyst-x64/MyApp.Mobile.runtimeconfig.json' did not specify a framework.
• If this should be a framework-dependent app, specify the appropriate framework in '/Users/west/Documents/MyApp/MyApp.Mobile/bin/Debug/net7.0-maccatalyst/maccatalyst-x64/MyApp.Mobile.runtimeconfig.json'.

Expected behavior

Runs like win or linux

[jeromelaban]

Thanks for the report.

Catalyst apps are packaged apps in the same sense that iOS apps are packaged. They don't start like any other CLI apps. See this article or this article on the .NET documentation.