容器构建完成后添加服务
问题描述：
是否可以在运行时注册服务，这意味着在构建了 ContainerBuilder 并且创建了 Container(以及 ContainerBuilder代码>处置)?
Is it possible to register a service at run-time, meaning after the ContainerBuilder has been built and the Container has been created (and ContainerBuilder disposed of)?
答
是的，你可以，使用 ContainerBuilder 上的 Update 方法:
Yes you can, using the Update method on ContainerBuilder:
var newBuilder = new ContainerBuilder();
newBuilder.Register...;
newBuilder.Update(existingContainer);