Updated first boot script.

pi4/files/etc/profile.d/stormux_first_boot.sh

@@ -1,5 +1,13 @@
 #!/usr/bin/env bash
 
+if [[ -x /opt/configure-stormux/configure-stormux.sh ]]; then
+    exit 0
+fi
+
+if ! [[ -x /opt/configure-stormux/configure-stormux.sh ]]; then
+    exit 0
+fi
+
 if [[ "$(tty)" = "/dev/tty1" ]]; then
     cat << "EOF"
 Hello, and welcome to Stormux!
@@ -14,5 +22,4 @@ Please press enter to continue.
 EOF
     read -r
     sudo configure-stormux
-    sudo rm -- "/etc/profile.d/stormux_first_boot.sh"
 fi