add script to make rootfs

mkuserland.sh

+#!/bin/bash
+
+set -e
+
+mmdebstrap --architectures=armhf --components=main --variant="minbase" sid rootfs http://ftp.de.debian.org/debian
+
+sudo chroot rootfs /bin/bash <<EOF
+export DEBIAN_FRONTEND=noninteractive
+export DEBCONF_NONINTERACTIVE_SEEN=true
+export LC_ALL=C
+export LANGUAGE=C
+export LANG=C
+
+echo "root:root" | chpasswd
+passwd -d root # remove root password
+
+# mount /proc if it doesn't exist
+if [[ ! -e /proc/version ]]; then
+  mount -t proc none /proc
+fi
+
+ln --force --symbolic /usr/share/zoneinfo/Europe/Berlin /etc/localtime
+echo "locales locales/default_environment_locale select en_US.UTF-8" | debconf-set-selections
+echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8" | debconf-set-selections
+dpkg --configure -a
+
+apt update
+apt install -y apt apt-utils gnupg ca-certificates
+
+# FIXME: where does exim4 come from??
+
+apt install -y cpio bsdmainutils init-system-helpers procps gpgv debian-archive-keyring readline-common cron netbase iproute2 ifupdown isc-dhcp-client iptables iputils-ping locales less net-tools curl wget nano vim coreutils parted file git sudo console-setup console-data unicode-data kbd systemd libpam-systemd systemd-sysv bash-completion ncurses-term usbutils fbset netcat-traditional nfacct traceroute htop ncdu ntpdate ntp screen telnet dosfstools e2fsprogs dialog i2c-tools xserver-xorg-video-fbdev xserver-xorg-input-libinput xserver-xorg-input-evdev
+
+# disable built-in sleep targets
+systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target
+
+EOF