In my experience, very, but it’s also not magic. Being able to package an application with its environment and ship it to any machine that can run Docker is great but it doesn’t solve the fact that modern deployment architecture can become extremely complicated, and Docker adds another component that needs configuration and debugging to an already complicated stack.
Unless your goal is to just get laid, don’t pretend to be anybody but who you are. If your date isn’t happy hanging out with your real self, there’s no future in that relationship.