Remove default user after installation

src/freedombone-image-customise

@@ -31,6 +31,9 @@ set -x
 
 PROJECT_NAME='freedombone'
 
+# username created by default within a debian image
+GENERIC_IMAGE_USERNAME='fbone'
+
 export TEXTDOMAIN=${PROJECT_NAME}-image-customise
 export TEXTDOMAINDIR="/usr/share/locale"
 
@@ -275,15 +278,26 @@ EOF
     # Remove the initial setup files
     echo '            rm /root/.initial_setup' >> $rootdir/root/.bashrc
     echo "            rm /home/${MY_USERNAME}/.initial_setup" >> $rootdir/root/.bashrc
+    echo "            touch /root/.remove_${GENERIC_IMAGE_USERNAME}" >> $rootdir/root/.bashrc
     echo '            shred -zu ~/login.txt' >> $rootdir/root/.bashrc
     echo '            dialog --title "Congratulations!" --msgbox "\nYour Freedombone system has now installed\n\nPress any key to reboot and begin using it" 9 50' >> $rootdir/root/.bashrc
-	cat >> $rootdir/root/.bashrc <<EOF
-            reboot
-        fi
-    fi
-    exit
-fi
-EOF
+
+    echo '            reboot' >> $rootdir/root/.bashrc
+    echo '        fi' >> $rootdir/root/.bashrc
+    echo '    fi' >> $rootdir/root/.bashrc
+    echo '    exit' >> $rootdir/root/.bashrc
+    echo 'else' >> $rootdir/root/.bashrc
+    echo '    # Remove default account after install' >> $rootdir/root/.bashrc
+    echo "    if [ -f /root/.remove_${GENERIC_IMAGE_USERNAME} ]; then" >> $rootdir/root/.bashrc
+    echo "        if [ -d /home/${GENERIC_IMAGE_USERNAME} ]; then" >> $rootdir/root/.bashrc
+    echo "           userdel -r ${GENERIC_IMAGE_USERNAME}" >> $rootdir/root/.bashrc
+    echo "           if [ -d /home/${GENERIC_IMAGE_USERNAME} ]; then" >> $rootdir/root/.bashrc
+    echo "               rm -rf /home/${GENERIC_IMAGE_USERNAME}" >> $rootdir/root/.bashrc
+    echo "               rm /root/.remove_${GENERIC_IMAGE_USERNAME}" >> $rootdir/root/.bashrc
+    echo '           fi' >> $rootdir/root/.bashrc
+    echo '        fi' >> $rootdir/root/.bashrc
+    echo '    fi' >> $rootdir/root/.bashrc
+    echo 'fi' >> $rootdir/root/.bashrc
 }
 
 continue_installation() {