[configs/releng] Add autologin.service

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

configs/releng/build.sh

@@ -174,6 +174,8 @@ make_customize_root_image() {
         sed -i "s/#Server/Server/g" ${work_dir}/root-image/etc/pacman.d/mirrorlist
         patch ${work_dir}/root-image/usr/bin/pacman-key < ${script_path}/pacman-key-4.0.3_unattended-keyring-init.patch
         sed -i 's/#\(en_US\.UTF-8\)/\1/' ${work_dir}/root-image/etc/locale.gen
+        sed 's#\(^ExecStart=-/sbin/agetty\)#\1 --autologin root#' \
+            ${work_dir}/root-image/usr/lib/systemd/system/getty@.service > ${work_dir}/root-image/etc/systemd/system/autologin@.service
         mkarchiso ${verbose} -w "${work_dir}" -C "${pacman_conf}" -D "${install_dir}" \
             -r 'locale-gen' \
             run