> diff --git a/meta/classes/isar-bootstrap-helper.bbclass b/meta/classes/isar-bootstrap-helper.bbclass
> index a316fe8..1ac39db 100644
> --- a/meta/classes/isar-bootstrap-helper.bbclass
> +++ b/meta/classes/isar-bootstrap-helper.bbclass
> @@ -140,7 +140,7 @@ setup_root_file_system() {
>          if [ ${KEEP_APT_CACHE} -eq 1 ]; then
>              mkdir -p ${WORKDIR}/apt_cache
>              sudo mv $(find $ROOTFSDIR/var/cache/apt -name '*.deb') ${WORKDIR}/apt_cache
> -            sudo chown $USER ${WORKDIR}/apt_cache/*
> +            sudo chown `whoami` ${WORKDIR}/apt_cache/*

Consider using the new-style syntax $(whoami) instead

>          fi
>          sudo -E chroot "$ROOTFSDIR" \
>              /usr/bin/apt-get autoremove --purge --yes
> -- 
> 2.11.0