[jenkins] Amazon Linux 2 에 Docker 설치

sudo su

sudo amazon-linux-extras install docker
sudo service docker start
sudo systemctl enable docker
sudo usermod -a -G docker ec2-user

// docker 설치 여부 확인
docker info

AWS DOCS : https://docs.aws.amazon.com/ko_kr/AmazonECS/latest/developerguide/create-container-image.html