1. apt update & upgrade
sudo apt update -y
sudo apt upgrade -y
2. docker에 필요한 패키지 설치
sudo apt install -y apt-transport-https ca-certificates curl software-properties-common
3. docker GPG key 추가
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
4. docker apt 저장소 추가
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
5. apt update
sudo apt-get update
6. docker 설치
sudo apt install -y docker-ce docker-ce-cli containerd.io
7. [WSL 사용 시] sudo 없이 docker를 사용하기 위해 계정 권한 추가
sudo groupadd docker
sudo usermod -aG docker $USER
sudo chmod 666 /var/run/docker.sock
newgrp docker
8. docker 실행
sudo service docker start
