Update commandline options with proper syntax
Update commandline options with proper syntax

Favor `--` instead of `-`
stevenzeiler/dind,lindenlab/dind,pugna0/dind,pcarranzav/resin-aerofs,azukiapp/dind,pekermert/dind,itriage/dind,sttts/mesos-dind,pombredanne/dind,taskcluster/dind-service,resin-io-projects/resin-aerofs,djmaze/dind,jpetazzo/dind,tomdee/dind,dit4c/dind-binary,taskcluster/dind-service,ContainerSolutions/dind,fearenales/dind,lstephen/docker-docker,karlkfi/dind,cviebig/docker-arch-docker