buildx failed with: ERROR: failed to solve: process "/bin/sh -c apt-get -y update && apt-get -y install openjdk-7-jdk make git ant && apt-get -y install apt-transport-https ca-certificates && apt-key adv --keyserver hkp://ha.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D && echo \"deb https://apt.dockerproject.org/repo ubuntu-trusty main\" > /etc/apt/sources.list.d/docker.list && apt-get -y update && apt-get -y install docker-engine=1.11.2-0~trusty" did not complete successfully: exit code: 2