reduce_image_docker_size and try centos6.8 release
reduce_image_docker_size and try centos6.8 release

jmcanterafonseca/fiware-orion,jmcanterafonseca/fiware-orion,jmcanterafonseca/fiware-orion,McMutton/fiware-orion,McMutton/fiware-orion,Fiware/data.Orion,Fiware/data.Orion,McMutton/fiware-orion,Fiware/data.Orion,jmcanterafonseca/fiware-orion,Fiware/data.Orion,McMutton/fiware-orion,jmcanterafonseca/fiware-orion,telefonicaid/fiware-orion,Fiware/data.Orion,McMutton/fiware-orion,McMutton/fiware-orion,telefonicaid/fiware-orion,telefonicaid/fiware-orion,McMutton/fiware-orion,telefonicaid/fiware-orion,jmcanterafonseca/fiware-orion,Fiware/data.Orion,telefonicaid/fiware-orion,telefonicaid/fiware-orion