Correction of dockerfile for ubuntu
Correction of dockerfile for ubuntu

NIWA-Hideyuki/Fulcon,NIWA-Hideyuki/Fulcon-VirtualPlatform,NIWA-Hideyuki/Fulcon-VirtualPlatform,NIWA-Hideyuki/Fulcon,NIWA-Hideyuki/Fulcon-VirtualPlatform,NIWA-Hideyuki/Fulcon