our solution was to create a content (ui.content) package for things like /conf or /content. Same as in the wknd Project. https://helpx.adobe.com/ch_de/experience-manager/kt/sites/using/getting-started-wknd-tutorial-develop/part1.html You can't mix up /conf folder under /apps. they have to be separated completely (new folder structure). Still don't know where to put the /etc/map folder now

Thanks, Arpit, this did the trick!