app_containers: Force the use of SUDO_ASKPASS

app_containers/.local/bin/run_app_container

@@ -59,7 +59,7 @@ if [ "$CONTAINER_RUN_AS_ROOT" = true ]; then
 fi
 
 homedir=/
-for line in $(sudo cat /var/lib/machines/$CONTAINER_NAME/etc/passwd); do
+for line in $(sudo -A cat /var/lib/machines/$CONTAINER_NAME/etc/passwd); do
   if [ "$(echo "$line" | cut -d: -f3)" == "$run_as" ]; then
     homedir="$(echo "$line" | cut -d: -f6)"
     break
@@ -87,7 +87,7 @@ xhost +si:localuser:\#$user_on_host
 # Note: any new device plugged in when the container is running would not
 # be added properly here.
 for input in $(find /dev/input -type c); do
-  sudo setfacl -m u:$user_on_host:rw- $input
+  sudo -A setfacl -m u:$user_on_host:rw- $input
 done
 
 sudo -A systemd-nspawn -M $CONTAINER_NAME \