var _unity = UnityConfig.GetConfiguredContainer();
var _settings = _unity.Resolve<SettingsContext>();

public class UnityConfig
{
    private static Lazy<IUnityContainer> container = new Lazy<IUnityContainer>(() =>
    {
        var container = new UnityContainer();
        RegisterTypes(container);
        return container;
    });

    public static IUnityContainer GetConfiguredContainer()
    {
        return container.Value;
    }

    public static void RegisterTypes(IUnityContainer unity)
    {
       //all the unity.RegisterType calls
    }
}