Docker pull mfgrouwise/webacc-ng

After giving this command on a oes2018sp2 server, i can see that any files was downloaded/pulled, also a digest and a last following info:
docker.io/mfgroupwise/webacc-ng:latest

where can i found the files?
what must i do for continuing installation/configuration?
how can i test the software?
are there a comprehensible documentation/explanation?

thanks for help

Claude Greiner