I'm building a theme with the TGM plugin. The theme is Astra (can be any theme), I work with the child-theme. The TGM plugin I installed in the child-theme, that works fine. My problem is how to get the Astra theme referenced correctly in TGM. I have a file astra.zip. When I try to install the child theme, I get a broken theme message. Which is correct, as the theme is not there.
Is it possible to get TGM to install the theme itself? Or should I package everything in Astra, and add the child-theme? In that case, same question: how to do reference the child theme?