Ubuntu에 docker 설치

# 사전 작업
sudo apt update

sudo apt install -y apt-transport-https ca-certificates curl software-properties-common

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# 설치
sudo apt update

sudo apt install -y docker-ce docker-ce-cli containerd.io

sudo systemctl enable --now docker

# 확인
sudo docker --version

# sudo 없이 docker 실행
sudo usermod -aG docker $USER

newgrp docker