Finalized core changes

src/step_4_create_CD.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+. CONFIG.sh
+
+# set -o xtrace       ## To debug scripts
+# set -o errexit      ## To exit on error
+# set -o errunset     ## To exit if a variable is referenced but not set
+
+
+function main() {
+    echo "Creating the ISO file..."
+    cd image/
+    sudo mkisofs -r -V "${OS_NAME}" -cache-inodes -J -l \
+        -b isolinux/isolinux.bin \
+        -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 \
+        -boot-info-table -o ../"${OS_NAME}".iso .
+    cd ..
+}
+
+main $@;