Thanks! I tried to build moby (in an existing VM) and it seemed to blow out my / file system. I built it in /home file system but it looks like it build docker images (ok I did not look at the makefile to see what it did before doing this, my bad). Looks like it created a docker-dev image . That was 2.4G. So I guess my bigger question has anyone specified out what a Linux file system configuration is minimally required to build moby?