Yes. I don't think there is a guide right now, but it shouldn't be too hard. You just need to select postgresql in the setup step.
NodeBB - FF 38.05 hangs
I've noticed over the past week on Mangolassi.it and now here when making another report that when I am surfing around the site, or clicking a button, frequently my browser will hang for a moment (up to several seconds). Then occasionally the browser will white out and say Not Responding.