https://pve.proxmox.com/wiki/Cloud-Init_Support
https://pve.proxmox.com/wiki/Cloud-Init_FAQ
https://pve.proxmox.com/wiki/Cloud-Init_Support
https://forum.proxmox.com/tags/proxmox-cloud-init/

https://www.trfore.com/posts/golden-images-and-proxmox-templates-using-cloud-init/
https://github.com/trfore/proxmox-template-scripts
https://github.com/trfore/proxmox-template-scripts/blob/main/scripts/image-update

https://github.com/agstaylor/proxmox-cloud-init-scripts

nixos
https://gist.github.com/voidus/1230b200043b7f815e2513663d16353b
    !!!
https://discourse.nixos.org/t/a-cloudinit-image-for-use-in-proxmox/27519/14
Savolla - Zero to Hero CI/CD Pipeline | Part 2b [NixOS Cloud-Init on Proxmox] 0:00 of 16:05
    https://www.youtube.com/playlist?list=PLrwzufn0Pq4ZRnMoet0roO6si6NsBDSA-
    https://www.youtube.com/watch?v=ddO4SphmHU0
https://justinas.org/nixos-in-the-cloud-step-by-step-part-1
https://www.joshuamlee.com/nixos-proxmox-vm-images/
    https://gist.github.com/joshleecreates/e6892ca21b0e6b7c24d96ca2a24bf23e
?
https://nixos.wiki/wiki/Proxmox_Virtual_Environment
https://wiki.nixos.org/wiki/Proxmox_Virtual_Environment
https://wiki.nixos.org/w/index.php?title=Proxmox_Virtual_Environment&mobileaction=toggle_view_desktop
https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/virtualisation/proxmox-image.nix

ubuntu
https://documentation.ubuntu.com/server/tutorial/basic-installation/
https://cloud-images.ubuntu.com/
https://github.com/UntouchedWagons/Ubuntu-CloudInit-Docs
https://provision-linux-machines-in-proxmox-from-a-template.hashnode.space/default-guide/creating-a-proxmox-vm-template-with-cloud-init-for-ubuntu

fedora
https://fedoraproject.org/cloud/download
https://fedoraproject.org/security
    https://download.fedoraproject.org/pub/fedora/linux/releases/41/Cloud/x86_64/images/Fedora-Cloud-41-1.4-x86_64-CHECKSUM
    curl -O https://fedoraproject.org/fedora.gpg
    gpgv --keyring ./fedora.gpg Fedora-Cloud-41-1.4-x86_64-CHECKSUM
    sha256sum --ignore-missing -c Fedora-Cloud-41-1.4-x86_64-CHECKSUM
https://www.apalrd.net/posts/2023/pve_cloud/

debian
https://cloud.debian.org/images/cloud/
https://mattedwards.org/2024/07/using-cloud-init-with-proxmox-vms/
https://static.xtremeownage.com/blog/2024/proxmox---debian-cloud-init-templates/
https://blog.stefandroid.com/2021/07/02/proxmox-debian-cloud-init-template.html

win
https://forum.proxmox.com/threads/how-to-create-windows-cloudinit-templates-on-proxmox-7-3-patch-included.123338/
https://github.com/thundervm/proxmox-windows-template

tf-cloudinit
https://registry.terraform.io/providers/bpg/proxmox/latest/docs/guides/cloud-init
https://codingpackets.com/blog/proxmox-cloud-init-with-terraform-and-saltstack/
https://dev.to/marksie1988/proxmox-template-with-cloud-image-and-cloud-init-3660

2024
TechnoTim - Perfect Proxmox Template with Cloud Image and Cloud Init 0:00 of 11:50
    https://www.youtube.com/watch?v=shiIi38cJe4
    https://technotim.live/posts/cloud-init-cloud-image/
https://bastientraverse.com/en/proxmox-optimized-cloud-init-templates/
    !!!
https://patrickpriestley.com/blog/how-to-create-vm-template/
https://medium.com/@alaayedi090/creating-a-proxmox-vm-template-with-cloud-init-cloud-image-dcde7bb2d327
    https://provision-linux-machines-in-proxmox-from-a-template.hashnode.space/default-guide/creating-a-proxmox-vm-template-with-cloud-init-for-ubuntu
    https://cloud-images.ubuntu.com/focal/current/
https://dev.to/minerninja/create-an-ubuntu-cloud-init-template-on-proxmox-the-command-line-guide-5b61
2023
https://alvaromartmunoz.medium.com/efficiently-creating-cloud-init-vm-templates-in-proxmox-for-streamlined-configuration-105fb8f936aa
    Cloud-init is a cloud server initialization and configuration tool used in Proxmox and other virtualization environments.
    It allows system administrators to define and customize the configuration of servers and virtual machines (VMs) quickly and automatically.
    In Proxmox, Cloud-init can be used to customize the configuration of VMs, such as network configuration, system users and groups, 
    configuration files, SSH keys, and other configuration tasks. 
    Cloud-init runs when a new VM is first started and is used to configure the VM with the data defined by the administrator.