Deploy Proxmox virtual machines using Cloud-init

Due to performance problems with my ESXI homelab I decided to give the open source solution Proxmox a try. One of my goals was to install all my virtual machines with the Cloud-init solution. With Cloud-init it is possible to inject informations such as ssh keys, network information or user profiles in an standarized way at boot time. The benefit of using Cloud-init is the pre-provisioning of necessary configuration items such as a static ip address or a default user with activated ssh public key authentication. Furthermore, this kind of provisioning helps a lot for further automation steps with Ansible or even complete CI/CD pipelines in Gitlab, Jenkins etc. But first, let's start with the VM provisioning steps in Proxmox.