The features we need are these and only these:
- Pay for and assign a container based on image.
- Assign new containers to specific IP's and run post-installation script.
- Start/stop/restart containers.
I noticed that VNC doesn't work, that doesn't really matter as we manage the servers for clients.
If this can be handled, we will go with Blesta - we have had issues with WHMCS since the start and it's very hard to manage.