What is currently the best option for running docker?

Thanks for this thread, @Th0mas . I’m a bit confused on this, myself.
I found these instructions for CLI-based install, which are apparently for VIM3, and they did not work: Docker | Khadas Documentation

I also see that the Docker packages are available in Ubuntu on VIM4 via the package manager. Should I install it that way and then, if necessary, use the workaround from @numbqq ?