Question: how does AUTH_HEADER work ?

[atodorov]

@ahmetb I've played around with this app and I can successfully configure it to proxy a public image from either Docker Hub or quay.io on my custom domain.

I've tried using the AUTH_HEADER variable to expose private images (hosted on quay.io) to a non-authorized account but cound't get this to work. (my end goal is to have custom authorization handler).

What is unclear to me is should I set a value of
Basic XYZ where XYZ is the base64 encoded value you can find in ~/.docker/config.json or to some other value?

If you can explain how the authentication handshake happens between the client and the registry that would probably also help me.

Thanks.

[ahmetb]

The code should be pretty explanatory. I believe it's used for basic authentication.