From the Github Repo Readme: These scripts enable users to build a Linux container or virtual machine in an interactive manner, offering options for both basic and advanced configurations. The basic setup utilizes default settings, whereas the advanced setup empowers users to alter these default settings. Through the use of the whiptail command, options are presented to users in a dialog box format. After the user makes their selections, the script collects and verifies the user’s input in order to generate the final configuration for the container or virtual machine.
I discovered it after installing a lot of my LXC containers, too. What I did was test the script and see if it made a better container than I did. If so, I just deleted the other LXC container. I also used it as a way to quickly change the LXC and VM IDs so that they would match the last octet of my internal IP address.
And don’t forget that you can run the Proxmox settings and cleanup scripts at any time.