Docker 설치 공식 가이드 for CentOS

• https://docs.docker.com/install/linux/docker-ce/centos/

OS 요구 사항

• To install Docker CE, you need a maintained version of CentOS 7. Archived versions aren’t supported or tested.

  The centos-extras repository must be enabled. This repository is enabled by default, but if you have disabled it, you need to re-enable it.

  The overlay2 storage driver is recommended.

Uninstall old versions

• $ sudo yum remove docker \
                    docker-client \
                    docker-client-latest \
                    docker-common \
                    docker-latest \
                    docker-latest-logrotate \
                    docker-logrotate \
                    docker-engine