If it helps anyone else, you can install .NET on Debian from packages.microsoft.com following https://docs.microsoft.com/en-us/dotnet/core/install/linux-debian
wget https://packages.microsoft.com/config/debian/11/packages-microsoft-prod.deb -O packages-microsoft-prod.deb sudo dpkg -i packages-microsoft-prod.deb sudo apt-get update && sudo apt-get install dotnet-runtime-6.0 dotnet-sdk-6.0 You need the dotnet-runtime package to run .NET applications and dotnet-sdk package to develop .NET applications. Fedora uses a similar naming convention for its packages https://packages.fedoraproject.org/pkgs/dotnet6.0/ . It would be awesome to see these packages in Debian one day.