initial version of the docker README.md
initial version of the docker README.md

jeffmart/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,mdb/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,mdb/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,mdb/incubator-trafficcontrol,mdb/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,mdb/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,mdb/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,mdb/incubator-trafficcontrol,hbeatty/incubator-trafficcontrol,mdb/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,mdb/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,jeffmart/incubator-trafficcontrol,mdb/incubator-trafficcontrol