The overlay should have a profile/ directory, containing a repo_name text file, which consists of just a line indicating the overlay name. I suggest calling it "telred" instead of "telred-overlay", since it is clear from context that it is indeed an overlay.
The overlay should have a profile/ directory, containing a repo_name text file, which consists of just a line indicating the overlay name. I suggest calling it "telred" instead of "telred-overlay", since it is clear from context that it is indeed an overlay.