Don't run docker_build test single threaded
Don't run docker_build test single threaded

vincent99/cattle,wlan0/cattle,rancher/cattle,cloudnautique/cattle,cjellick/cattle,cloudnautique/cattle,Cerfoglg/cattle,jimengliu/cattle,cjellick/cattle,vincent99/cattle,rancher/cattle,cjellick/cattle,rancherio/cattle,vincent99/cattle,wlan0/cattle,cloudnautique/cattle,rancherio/cattle,Cerfoglg/cattle,rancher/cattle,jimengliu/cattle,rancherio/cattle,wlan0/cattle,cjellick/cattle,cloudnautique/cattle,Cerfoglg/cattle,jimengliu/cattle