updated mysql dockerfile
updated mysql dockerfile

smrjan/seldon-server,smrjan/seldon-server,SeldonIO/seldon-server,smrjan/seldon-server,SeldonIO/seldon-server,SeldonIO/seldon-server,SeldonIO/seldon-server,smrjan/seldon-server,SeldonIO/seldon-server,smrjan/seldon-server