Here is a basic outline of what you need to do to deploy our SPAS in a VM in Proxmox
Download the QCOW2 zip file from SPAS_QCOW2.ZIP
Extract the qcow2 file and upload it to your Proxmox server (make sure you have space)
Create a new VM with settings similar to these:
In the above, you can see that the VM uses the EFI BIOS, has and EFI disk added to it, and the qcow2 disk has already be added to the (steps below).
Make a note of the VM number of the new VM.
In the Proxmox server shell, use the qm import option to import the qcow2 disk into the new VM you have created for it.
An example of the command:
qm importdisk <VM ID> <qcow2 image> <storage name>
In the VM's hardware configuration, edit the unused disk and make it an IDE disk with the appropriate caching options. (you might be able to change the disk controller option later but it appears that the most reliable option for this qcow2 disk is the IDE option)
Example (note the unused disk that was imported)
Check the boot options in the VM setup to confirm that either there are no boot items listed or the one enabled is the one matching the disk that has been added to the VM.
Note that in this example there are not boot devices selected in boot order:
Test a boot and observe the process in the VM console to see that it boots up.
You will likely see it boot and do a boot repair with either an automatic reboot or an option to restart, at which point it should be live in the system.