title: What is Docker.qcow2?
body: <p>I was looking at my disk with DaisyDisk and I have a 30GB something called Docker.qcow2. More specifically, DaisyDisk puts it under <code>~/Library/Containers/com.docker.docker/Data/vms/0/Docker.qcow2</code>. Is it some kind of cache? Can I delete it? I have a lot of images from old projects that I won't ever use and I'm trying to clear up my disk.</p>