Docker CE

Install Docker CE and Docker Compose.
First, place your username in a text file in the /root directory with this echo command below.

echo "mydesktopusername" > /root/DEFAULT_DESKTOP_USERNAME.txt

yum -y install http://pbase-foundation.com/pbase-repo.rpm
yum -y install pbase-preconfig-docker-ce
yum -y install pbase-docker-ce

Here's some example commands of setting up the Portainer UI with docker.

docker pull portainer/portainer
docker run -d -p 9000:9000 -v /var/run/docker.sock:/var/run/docker.sock portainer/portainer
docker pull centos
docker run -it centos

More about Docker CE

Read more about the Docker project at:
https://docs.docker.com/get-started/