docker에서 제공하는 shellscript로 docker engine 설치.

# docker 에서 제공하는 shell script를 이용한 자동 설치.

curl -fsSL https://get.docker.com -o get-docker.sh

# shell script 내용 확인 후 변경 가능.

sudo vi get-docker.sh

# 실행 권한 부여

chmod +x get-docker.sh

# 설치.

sudo sh get-docker.sh

만약 Docker가 설치가 안된다면..

Base.repo를 바꿔보자.

[base]
name=CentOS-$releasever - Base
baseurl=http://vault.centos.org/7.9.2009/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[updates]
name=CentOS-$releasever - Updates
baseurl=http://vault.centos.org/7.9.2009/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[extras]
name=CentOS-$releasever - Extras
baseurl=http://vault.centos.org/7.9.2009/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://vault.centos.org/7.9.2009/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[contrib]
name=CentOS-$releasever - Contrib
baseurl=http://vault.centos.org/7.9.2009/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7