I'm using AutoFac. I want to inject a different implementation of a dependency based on an attribute I apply to the constructor parameter. For example:

class CustomerRepository
{
    public CustomerRepository([CustomerDB] IObjectContainer db) { ... }
}

class FooRepository
{
    public FooRepository([FooDB] IObjectContainer db) { ... }
}

builder.Register(c => /* return different instance based on attribute on the parameter */)
       .As<IObjectContainer>();

The attributes will be providing data, such as a connection string, which I can use to instance the correct object.

How can I do this?