Hi, Sorry my fault, didn't notice that I still wrote at the KAS mailing list. Here is the short summary: I'm currently working on integrating a restricted Debian package feed. APT is using auth.conf file for this. It is working for me, but I now look into inject the auth file from outside, so I don't have the credentials within my source code. Sorry I'm not that deep in the isar meta classes, but I looked a little bit into them. My first idea of how to integrate it would be to add into the buildchroot.bbclass in the buildchroot_do_mounts something like cp -L /etc/apt/auth.conf.d/artifactory.conf '${BUILDCHROOT_DIR}/etc/apt/auth.conf.d/' So if such a file would exist inside the container, it would be hard linked to the buildchroot-host First try failed, but the question if I'm totally wrong or on the right track? Thanks Regards Sven