The first thing to do when installing a new CoreOS is to install the Docker Compose.
node01 ~ # sudo su -
node01 ~ # mkdir -p /opt/bin
node01 ~ # curl -L "https://github.com/docker/compose/releases/download/1.14.0/docker-compose-$(uname -s)-$(uname -m)" -o /opt/bin/docker-compose
node01 ~ # chmod +x /opt/bin/docker-compose
node01 ~ # docker -v
Docker version 17.06.0-ce, build 02c1d87
node01 ~ # docker-compose -v
docker-compose version 1.14.0, build c7bdf9e3