CDH Frame derailleur dropout HELP

[aqua zombie]

I’m very new to building/assembling derailleur and shifting components. I have a cdhpower frame with what I call a “track” style for the rear wheel to be accepted into. I would like to build this bike to shift. Does anyone have any advice on what components I need to get from a-b as far as setting up a rear derailleur for a 5 speed freewheel. I have included a pic below as to the style of dropout I have. (Technicaly not a dropout?) basically I don’t know if there is a direct bolt on setup or do I need to fabricate something for the derailleur to hang on to?

 

[wrench]

It's up to you to pick one out.

The derailleur should mount like it's suppose to, If anything ya might have to drill a hole for the hanger set bolt
Check these out, you should be able to figure something out.

Amazon.com : 5 speed rear derailleur

 

[aqua zombie]

I found this… and plan to give it a shot. Then I assume a “direct mount” style derailleur would be in order, that will be capable of the amount of speeds I am working with.