The same wiring as AspNetCoreExample using the minimal hosting model, with everything configured inline in Program.cs and no Startup class. Read the two side by side to see what the Startup class does and does not buy you.
Packages: Autofac.Extensions.DependencyInjection
Run dotnet run --project src/AspNetCoreNoStartupExample, then browse to http://localhost:5000/api/values.
See ASP.NET Core for the documentation this example follows.