Yes this is the hidden beauty of docker... "I don't need to remember". Someone can reverse engineer exactly how I have a goofy custom postgres setup instantly,

Yes this is the hidden beauty of docker... "I don't need to remember". Someone can reverse engineer exactly how I have a goofy custom postgres setup instantly, just by looking at my original Dockerfile I committed a year ago. No hunting around on the OS! As someone else said, docker isn't about you, it's about everyone else. The extra complexity up front is so worth it for the rest of the team.