Ix-brand-theme from https://captain.rtf.siemens.net/

We are using the ix-brand-theme package and configured the registry as https://captain.rtf.siemens.net/ as mentioned in the code.siemens repo

The package is resolved when I work on my machine. However in the gitlab-ci pipeline we get an error getaddrinfo ENOTFOUND captain.rtf.siemens.net

This was working till yesterday

getaddrinfo ENOTFOUND captain.rtf.siemens.net