[Docker] Docker 설치 (Ubuntu 20.04 이상) (apt repository 이용, Docker engine 설치)

 

OS requirements

Docker 엔진을 설치하기 위해, 아래의 우분투 버전 중 하나의 64비트 버전의 OS가 필요하다.

- Ubuntu Mantic 23.10
- Ubuntu Lunar 23.04
- Ubuntu Jammy 22.04 (LTS)
- Ubuntu Focal 20.04 (LTS)

 

Step 1. 설치 전, 충돌되는 패키지들을 uninstall 한다.

설치 이전에, 먼저 설치가 이미 되었던 패키지를 먼저 삭제한 후 진행해야한다. 아래의 명령어를 실행한다.

for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done

 

 

만약 초기 설치라면 아래처럼 실행결과화면이 뜰 것이다.

실행결과: 

Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'docker.io' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 197 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'docker-doc' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 197 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'docker-compose' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 197 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'docker-compose-v2' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 197 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package podman-docker
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'containerd' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 197 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'runc' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 197 not upgraded.

 

 

Step 2. Docker's apt repository를 셋업한다.

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl gnupg
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

# Add the repository to Apt sources:
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

 

 

 

Step 3. Install the Docker packages.

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

 

 

Step 4.Verify that the Docker Engine installation is successful by running the hello-world image.

sudo docker run hello-world

출처 : https://docs.docker.com/engine/install/ubuntu/