Map services with init variables?

[mikegrogan]

Is there a recommended way to pass in config settings (e.g. get("datasourcename") ) inside a service?

You can't just call get("datasourcename") inside the service it looks like. If I try to do something in an init function it seems to just find other services and auto wire it up. https://guides.wheels.dev/v4-0-0/digging-deeper/dependency-injection-usage/#auto-wiring-init-parameters

Can I also pass in my own variables to an init? Inside services.cfm I can dump a get variable.
writeDump(var=get("datasourcename"),abort=true,label="");

But I'm not sure if it's possible to pass anything in the service mapping
local.di = injector();
local.di.map("emailService").to("app.lib.emailService").asSingleton();

I see wirebox has something like initWith that might be the closest thing to what I'm thinking.
initwith: https://wirebox.ortusbooks.com/configuration/mapping-dsl/dependencies-dsl

I'm just exploring. This isn't super urgent. Or maybe it's not even a recommended approach.

As a workaround, I can still call a function inside my service and pass in a get variable. It's just maybe not as clean.