Players are not able to dock at another player. It is not possible in Freelancer. You might be able to create new bases by copying and editing some of the files but a moving base would have completely different features which are new to the Freelancer "engine". As far as I know it is actually possible to do it by console command: Lets say you see your leader in his battleship and type /dock. Like that you might be able to "dock" at a planet but as far as iI know you would undock from this plane…