Setting up publiciser requirement on Linux

Install DotNet Core 6.0.

Open your terminal and enter the following commands:

sudo add-apt-repository ppa:dotnet/backports

Press Enter

sudo apt update

sudo apt install dotnet-sdk-6.0

sudo apt install dotnet-runtime-6.0

sudo apt install aspnetcore-runtime-6.0

You can validate they are installed with:

dotnet --list-runtimes

dotnet --list-sdks

Finally if you're using a flatpack version of Rider. MAKE SURE it has access to your steam folder.

Or where ever your game is installed

Example:

flatpak override --user com.jetbrains.Rider --filesystem=/home/luke/.var/app/com.valvesoftware.Steam

Notes

Once all that is done, if you still can't build. You MAY need to open Rider and go to:

Settings -> Toolset and Build -> .NET CLI executable path

If you see /home/your_name/.dotnet/dotnet and have the option to use one in /var/run/host/usr/lib/dotnet/dotnet you'll wanna use the /var/run/host one instead.

You might also need dotnet 8.0. If you do run these commands

sudo apt install dotnet-sdk-8.0

sudo apt install dotnet-runtime-8.0

sudo apt install aspnetcore-runtime-8.0