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Installing Docker on various systems

RHEL/CentOS

Setup docker using the official docker repo, not EPEL.

Check that docker is not installed already,

ls -al /etc/yum.repos.d/
rpm -qa | grep -i docker

Install, enable and start docker-engine from [official repo] (https://docs.docker.com/engine/installation/linux/centos/). Skip the hello-world part but don’t forget to add the docker user to the docker group.

Ubuntu

apt update
apt install docker.io

Ready to go

Check that everything works, as user,

docker ps