Add a more usable user shell

Dash is great as a system shell, but it's pretty horrible as a user
shell as there is no tab completion or history. There are things that
the busybox ash applet does provide making it a lot more pleasant to
use, while only less then 500 kilobytes to the ospack.

As an added benefit this gives easy acces to the wget/nc/ip busybox
applets.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>

apertis-ospack.yaml

@@ -68,6 +68,7 @@ actions:
   - action: apt
     description: "Base packages"
     packages:
+      - busybox
       - busybox-initramfs
       - dbus-user-session
 

scripts/setup_user.chroot

@@ -13,4 +13,9 @@ if [ -x /bin/bash ]; then
   chsh --shell /bin/bash user
   echo "I: set root shell to /bin/bash"
   chsh --shell /bin/bash
+elif [ -x /bin/ash ]; then
+  echo "I: set user shell to /bin/ash"
+  chsh --shell /bin/ash user
+  echo "I: set root shell to /bin/ash"
+  chsh --shell /bin/ash
 fi