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.

출처

https://docs.docker.com/storage/storagedriver/select-storage-driver/

Docker Engine - Community

For Docker Engine - Community, only some configurations are tested, and your operating system’s kernel may not support every storage driver. In general, the following configurations work on recent versions of the Linux distribution:

Linux distribution	Recommended storage drivers	Alternative drivers
Docker Engine - Community on Ubuntu	`overlay2` or `aufs` (for Ubuntu 14.04 running on kernel 3.13)	`overlay`¹, `devicemapper`², `zfs`, `vfs`
Docker Engine - Community on Debian	`overlay2` (Debian Stretch), `aufs` or `devicemapper`(older versions)	`overlay`¹, `vfs`
Docker Engine - Community on CentOS	`overlay2`	`overlay`¹, `devicemapper`², `zfs`, `vfs`
Docker Engine - Community on Fedora	`overlay2`	`overlay`¹, `devicemapper`², `zfs`, `vfs`

Supported backing filesystems

With regard to Docker, the backing filesystem is the filesystem where /var/lib/docker/ is located. Some storage drivers only work with specific backing filesystems.

Storage driver	Supported backing filesystems
`overlay2`, `overlay`	`xfs` with ftype=1, `ext4`
`aufs`	`xfs`, `ext4`
`devicemapper`	`direct-lvm`
`btrfs`	`btrfs`
`zfs`	`zfs`
`vfs`	any filesystem

Uninstall old versions

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

Docker CE 설치

저장소를 설정하고 설치하는 방법 : 가장 일반적인 방법으로 설치 및 업그레이드 작업을 쉽게하기 위해
수동으로 설치 : PM 패키지를 다운로드하여 수동으로 설치 하고 업그레이드를 완전히 수동으로 관리 (for not Internet)
자동화된 스크립트로 설치 : 테스트 및 개발 환경에서 사용하여 Docker를 설치

저장소를 설정하고 설치하는 방법

필수 패키지 설치

$ sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2

Stable repository 설정

$ sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

Docker CE 설치

최신 버전설치

$ sudo yum install docker-ce docker-ce-cli containerd.io