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.