[scripts] replace "source /etc/profile" with more POSIX-friendly ". /etc/profile"

scripts/generic_post_iso_script.sh

@@ -8,7 +8,8 @@
 #
 # This script requires isohybrid (which comes from syslinux package)
 
-/usr/sbin/env-update && source /etc/profile
+/usr/sbin/env-update
+. /etc/profile
 
 echo
 echo "Spawning isohybrid for:"

scripts/generic_pre_iso_script.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 /usr/sbin/env-update
-source /etc/profile
+. /etc/profile
 
 # Path to molecules.git dir
 SABAYON_MOLECULE_HOME="${SABAYON_MOLECULE_HOME:-/sabayon}"

scripts/image_generic_inner_chroot_script_after.sh

@@ -4,7 +4,8 @@ echo
 echo "Configuring AMI chroot"
 echo
 
-/usr/sbin/env-update && source /etc/profile
+/usr/sbin/env-update
+. /etc/profile
 
 # setup networking, make sure networkmanager is gone
 rc-update del networkmanager default &> /dev/null

scripts/inner_chroot_script.sh

@@ -19,8 +19,8 @@ rm -rf /root
 cp /etc/skel /root -Rap
 chown root:root /root -R
 
-source /etc/profile
-/usr/sbin/env-update && source /etc/profile
+/usr/sbin/env-update
+. /etc/profile
 
 # Setup locale to en_US
 echo LANG=\"en_US.UTF-8\" > /etc/env.d/02locale

scripts/inner_source_chroot_update.sh

@@ -1,8 +1,7 @@
 #!/bin/bash
 
-source /etc/profile
-env-update
-source /etc/profile
+/usr/sbin/env-update
+. /etc/profile
 
 # Setup environment vars
 export ETP_NONINTERACTIVE=1