WaitForExitSignal.cs

private static void WaitForExitSignal()
{
    using (var signal = new ManualResetEventSlim())
    {
        // Handle SIGTERM
        AssemblyLoadContext.Default.Unloading += _ => signal.Set();

        // Hadle SIGINT/Ctrl+C
        Console.CancelKeyPress += (s, a) =>
        {
            a.Cancel = true;
            signal.Set();
        };

        //Block until signaled
        signal.Wait();
    }
}