If I had to pick a more common phrase to research on HN, it would be "growth hacking". By marketing-first I mean growth hacking/PR is priority #1.
I'm not saying anything against this person professionally or personally, it is more a textbook example of marketing hustle as key to financial success. I prioritize technology ahead of marketing, and am currently struggling to flip this around.
PS. I didn't know Docker was YCS10, so props to YC for connecting with this person early. Growth hacking definitely fits into the YC culture.