Hi @Pragmatic,
Welcome to the community! 
and thanks for trying out SuiteCRM 8.
We are in the process of updating the SuiteCRM 8 install guide, to include among other things the steps to use the web install page, which could be simpler than using the cli.
We’ll try to include as much information as possible, however for some of the steps you’ll need some technical knowledge regarding apache and php configuration.
Regarding docker, we don’t yet have an official image. Though you could check the following image that has been provided by another user, to see if it helps: