I want a way to have a specific dependency register in specific environments

[hartmannr76]

Microsoft.AspNetCore already has a concept of HostingEnvironment. Maybe we should take a wrapper that allows these types of configs to be setup to determine which dependency to actually register, based on the environment.

For example, if I were to be running this on a system that doesn't need to connect to a database, but in production I want it to, I'd expect to see the following:

[Dependency(Environment=Config.Staging)]
public class InMemoryRepository : IRepository {
 // does in-memory version of IRepository work
}

[Dependency(Environment=Config.Production)]
public class DatabaseRepository : IRepository {
 // does database version of IRepository work
}

We can default this to an Any this way ones that are not configured, register for all sets