Adding hostfile entry for docker.io to keep Docker from hanging.
Adding hostfile entry for docker.io to keep Docker from hanging.

openwis-ss/elasticsearch,lguminski/elasticsearch,alex-glv/elasticsearch,jhftrifork/elasticsearch,jhftrifork/elasticsearch,pekermert/elasticsearch,jrslv/elasticsearch,frankscholten/elasticsearch,pekermert/elasticsearch,frankscholten/elasticsearch,ruo91/elasticsearch-1,mwl/elasticsearch,jrslv/elasticsearch,openwis-ss/elasticsearch,matthoffner/elasticsearch,frankscholten/elasticsearch,jrslv/elasticsearch,matthoffner/elasticsearch,mesos/elasticsearch,matthoffner/elasticsearch,lguminski/elasticsearch,lguminski/elasticsearch,mesos/elasticsearch,pekermert/elasticsearch,mesos/elasticsearch,alex-glv/elasticsearch,ruo91/elasticsearch-1,openwis-ss/elasticsearch,ruo91/elasticsearch-1,matthoffner/elasticsearch,lguminski/elasticsearch,pekermert/elasticsearch,jhftrifork/elasticsearch,mesos/elasticsearch,mwl/elasticsearch,alex-glv/elasticsearch,frankscholten/elasticsearch,alex-glv/elasticsearch,openwis-ss/elasticsearch,mwl/elasticsearch,jhftrifork/elasticsearch,mwl/elasticsearch,jrslv/elasticsearch