updating for packer

infra-config/04-vm-templates/fedora-41/README.md

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+# packer-CentOS8
+
+## What is packer-CentOS8 ?
+
+packer-CentOS8 is a set of configuration files used to build an automated CentOS 8 virtual machine images using [Packer](https://www.packer.io/).
+This Packer configuration file allows you to build images for VMware Workstation and Oracle VM VirtualBox.
+
+## Prerequisites
+
+- [Packer](https://www.packer.io/downloads.html)
+  - <https://www.packer.io/intro/getting-started/install.html>
+- A Hypervisor
+  - [VMware Workstation](https://www.vmware.com/products/workstation-pro.html)
+  - [Oracle VM VirtualBox](https://www.virtualbox.org/)
+
+## How to use Packer
+
+Commands to create an automated VM image:
+
+To create a CentOS 8 VM image using VMware Workstation use the following commands:
+
+```cmd
+cd c:\packer-CentOS8
+packer build -only=vmware-iso centos8.json
+```
+
+To create a CentOS 8 VM image using Oracle VM VirtualBox use the following commands:
+
+```cmd
+cd c:\packer-CentOS8
+packer build -only=virtualbox-iso centos8.json
+```
+
+*If you omit the keyword "-only=" both the Workstation and Virtualbox VMs will be created.*
+
+By default the .iso of CentOS 8 is pulled from <http://miroir.univ-paris13.fr/centos/8/isos/x86_64/CentOS-8.1.1911-x86_64-boot.iso>
+
+You can change the URL to one closer to your build server. To do so change the **"iso_url"** parameter in the **"variables"** section of the centos8.json file.
+
+```json
+{
+  "variables": {
+      "iso_url": "http://miroir.univ-paris13.fr/centos/8/isos/x86_64/CentOS-8.1.1911-x86_64-boot.iso"
+}
+```
+
+## Keyboard configuration
+
+By default the keyboard is set to be US qwerty.
+To switch it to something else edit the following file:
+
+- ./http/ks.cfg
+
+Set the `keyboard` parameter as desired, for example: `keyboard --vckeymap=fr --xlayouts='fr'`
+
+## Default credentials
+
+The default credentials for this VM image are:
+
+|Username|Password|
+|--------|--------|
+|packer|packer|
+|root|packer|