workbench deploy: detect ubuntu and guide user

create directory and enforce that it is copied in directory

deploy-workbench.sh

@@ -260,8 +260,9 @@ prepare_app() {
         # prepare app during prepare_chroot_env
         # Install hardware_metadata module
         workbench_dir="${ISO_PATH}/chroot/opt/workbench"
-        ${SUDO} cp workbench-script.py "${workbench_dir}"
-        ${SUDO} cp requirements.txt "${workbench_dir}"
+        ${SUDO} mkdir -p "${workbench_dir}"
+        ${SUDO} cp workbench-script.py "${workbench_dir}/"
+        ${SUDO} cp requirements.txt "${workbench_dir}/"
 
         # startup script execution
         cat > "${ISO_PATH}/chroot/root/.profile" <<END
@@ -389,6 +390,11 @@ prepare_chroot_env() {
         if [ -z "${VERSION_CODENAME:-}" ]; then
                 . /etc/os-release
                 echo "TAKING OS-RELEASE FILE"
+                if [ "${ID}" = "debian" ]; then
+                        echo "ERROR: ubuntu detected, then you are enforced to specify debian variant"
+                        echo "  use for example \`VERSION_CODENAME='bookworm'\` or similar"
+                        exit 1
+                fi
         fi
 
         chroot_path="${ISO_PATH}/chroot"