Finally! I can finally use one Dockerfile for Fig development, but another for staging and pushing it to Octohost, and then a final one for kicking up to AWS/CoreOS for deployment!

They all use the same code, they just have subtly different configurations and trade-offs. This is going to make that so much easier!

I feel the same way: first time I used docker when I found I can't specify file to use, I feel inconceivable.