is :
debian_mirror="
http://ftp.de.debian.org/debian"
mirror_components="main contrib non-free"
but the errors :
ERROR: missing required packages from profile default: less
ERROR: missing required packages from profile default: simple-cdd-profiles
WARNING: missing optional packages from profile default: grub popularity-contest localization-config console-tools usbutils acpi acpid eject lvm2 mdadm cryptsetup reiserfsprogs jfsutils xfsprogs type-handling debootstrap busybox syslinux-common syslinux