If your C suite requires approving a $5/month charge the company has serious issues. This always bugs me about the HN attitude about spending money, but it's really a extremely frugal developer complex. It's $5 a month, you get insane value out of Docker Hub, just pay it. I come from an entrepreneur attitude, my time is my most precious commodity. I don't optimize minor expenses, I optimize the big picture, my time, outcomes, and revenue coming in.