deflogin: Added SPECIAL_USER

Variable SPECIAL_USER must have the following format:
user:group:uid:gid:homedir:shell
Example:
@$(call set,SPEC_USER,user:user:500:500:/home/user:/bin/bash)

conf.d/regular-vm.mk

@@ -58,7 +58,8 @@ vm/regular-jeos-systemd: vm/systemd-net \
 	mixin/regular-vm-jeos mixin/vm-archdep
 	@$(call add,THE_PACKAGES,glibc-locales)
 
-vm/regular-jeos-sysv: vm/net mixin/regular-vm-jeos mixin/vm-archdep +power; @:
+vm/regular-jeos-sysv: vm/net mixin/regular-vm-jeos mixin/vm-archdep +power
+	@$(call set,SPEC_USER,officer:officer:64:64:/bin/bash)
 
 vm/regular-builder: vm/regular-jeos-sysv mixin/regular-builder
 	@$(call set,VM_SIZE,10737418240)

conf.d/regular.mk

@@ -62,6 +62,7 @@ distro/.regular-jeos-base: distro/.regular-bare \
 	@$(call add,THE_BRANDING,alterator) # just to be cleaned up later on
 	@$(call add,THE_PACKAGES,apt basesystem dhcpcd vim-console su agetty)
 	@$(call add,THE_LISTS,openssh)
+	@$(call set,SPEC_USER,officer:officer:64:64:/bin/bash)
 
 # ...and for somewhat bare distros
 distro/.regular-jeos: distro/.regular-jeos-base use/stage2/kms \

features.in/deflogin/config.mk

@@ -6,6 +6,7 @@ use/deflogin:
 	@$(call xport,ROOTPW)
 	@$(call xport,USERS)
 	@$(call xport,GROUPS)
+	@$(call xport,SPEC_USER)
 
 # some presets
 # USERS variable chunk format is "login:passwd:admin:sudo"

features.in/deflogin/rootfs/image-scripts.d/50-users

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/sh -x
 # add regular user(s) assigning passwords and attributes of power
 
 # NB: care that the utilities exist; shadow-utils is warranted
@@ -34,3 +34,13 @@ set_sudo() {
 		[ -z "$admin" ] || set_admin "$login"
 		[ -z "$sudo" ] || set_sudo "$login"
 	done
+
+# create special user
+[ -z "$GLOBAL_SPEC_USER" ] ||
+	echo "$GLOBAL_SPEC_USER" \
+	| tr ' ' '\n' \
+	| while IFS=':' read login group uid gid homedir shell; do
+	groupadd -g $gid $group >/dev/null 2>&1 || :
+	useradd -g $gid -u $uid -d $homedir -s $shell $login >/dev/null 2>&1 || :
+	usermod -G $group $login || :
+	done