adding support for groups for live user

extra/dist.build.ini

@@ -26,6 +26,7 @@ user = yes
 [user]
 username = ${bdisk:uxname}
 name = Default user
+groups = ${bdisk:uxname},admin
 password =
 
 [source_x86_64]

extra/pkg.build.ini

@@ -26,6 +26,7 @@ user = yes
 [user]
 username = ${bdisk:uxname}
 name = Default user
+groups = ${bdisk:uxname},admin
 password =
 
 [source_x86_64]

extra/pre-build.d/root/pre-build.sh

@@ -141,7 +141,12 @@ then
 fi
 # Add the regular user
 useradd -m -s /bin/bash -c "${USERCOMMENT}" ${REGUSR}
-usermod -aG users,games,video,audio ${REGUSR}
+usermod -aG users,games,video,audio ${REGUSR}  # TODO: remove this in lieu of $REGUSR_GRPS? these are all kind of required, though, for regular users anyways
+for g in $(echo ${REGUSR_GRPS} | sed 's/,[[:space:]]*/ /g');
+do
+	getent group ${g} > /dev/null 2>&1 || groupadd ${g}
+	usermod -aG ${g} ${REGUSR}
+done
 passwd -d ${REGUSR}
 # Add them to sudoers
 mkdir -p /etc/sudoers.d

extra/templates/pre-build.d/root/VARS.txt.j2

@@ -4,6 +4,7 @@ export PNAME='{{ bdisk['name'] }}'
 export DISTPUB='{{ bdisk['dev'] }}'
 export DISTDESC='{{ bdisk['desc'] }}'
 export REGUSR='{{ user['username']|lower }}'
+export REGUSR_GRPS='{{ user['groups'] }}'
 export USERCOMMENT='{{ user['name'] }}'
 export REGUSR_PASS='{{ user['password'] }}'
 export ROOT_PASS='{{ bdisk['root_password'] }}'