How to train goalkeepers?

Can someone tell what is the best way to train goalkeeper(s) in the "new" training system? Aside from physical training, goalkeepers need the skills that are trained only by "goalkeeper training", and the skills developed by "goalkeeper training" are useless for other team members - which probably means that goalkeepers' training should be totally isolated from the rest of the team, and their training should only include this one type plus some physical training. Is that how it's supposed to work?

add drills that increase reflexe,communication,punching ,aerial reach ,i only focus on these and my gk always perform very good

I would add concentration as well.