Recently I stumbled around a docker instance of SAP S/4 at the Docker Hub. In the end, it’s not a fully-featured SAP S/4 with all ERP elements in place, but it’s the core of the S/4 system with some small add-ons. It shares the same foundation as the fully-featured S/4. Maybe that’s the reason why they called it Developer Edition.
The S/4 instance could be installed and operated using the standard Docker tools. Based on the size and consumption of the container, some things need to be changed on the host side to support such a big workload, but those are some minor tweaks. So if you would like to play around with the IDE that comes with S/4, it’s a pretty good place to start.