I'm very new to containers, but I think I'm starting to get the hype a bit. Recently I was working on a couple of personal projects, and for one I wanted a Post

I'm very new to containers, but I think I'm starting to get the hype a bit. Recently I was working on a couple of personal projects, and for one I wanted a Postgres server, and for the other PhantomJS so that I could do some webscraping. Since I try to keep my projects self-contained I try to avoid installing software onto my Mac. So my usual workflow would be to use Vagrant (sometimes with Ansible) to configure a VM. I do this infrequently enough that I can never remember the syntax, and there's a relatively long feedback loop when trying to debug install commands, permissions etc. I gave Docker a try out of frustration, but was simply delighted when I discovered that I could just download and start Postgres in a self-contained way. And reset it or remove it trivially. I know there's a lot more to containers than this, but it was an eye-opener for me.