check to make sure we are connected to docker during the init
check to make sure we are connected to docker during the init

nanobox-io/nanobox-cli,nanobox-io/nanobox,nanobox-io/nanobox-cli,nanobox-io/nanobox-cli,pagodabox/nanobox-cli,nanobox-io/nanobox,pagodabox/nanobox-cli