`dotnet pack` failed

[aloisdg]

To reproduce:

dotnet pack

Actual:

Microsoft (R) Build Engine version 17.0.0+c9eb9d
Copyright (C) Microsoft Corporation. All rights 

  Determining projects to restore...
  All projects are up-to-date for restore.
  ExtLauncher -> /home/aloisdg/Source/extLauncheetcoreapp3.1/ExtLauncher.dll
  ExtLauncher -> /home/aloisdg/Source/extLauncheet6.0/ExtLauncher.dll
/usr/share/dotnet/sdk/6.0.102/Sdks/Microsoft.NETT.Publish.targets(102,5): error NETSDK1097: It ih an application to a single-file without specif You must either specify a RuntimeIdentifier or false. [/home/aloisdg/Source/extLauncher/ExtLauncher]

Expected:

no error 👍

[aloisdg]

Needed for #8