Configure Services registering dependencies for a web app

Startup.cs

public class Startup
{
    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddSingleton<ICustomLogger, CustomLogger>();
        services.AddScoped<IRepository, Repository>();
        services.AddControllersWithViews();
    }
}