우분투에 도커 설치

최신 버전의 도커 설치를 위해 오래된 버전 삭제

sudo apt-get remove docker docker-engine docker.io containerd runc

apt package index를 업데이트 하고 HTTPS를 통해 repository 를 이용하기 위해 pakcage 들을 설치

sudo apt update

sudo apt-get install -y ca-certificates \ 
    curl \
    software-properties-common \
    apt-transport-https \
    gnupg \
    lsb-release

Docker의 Official GPG Key 등록

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

stable repository 등록

echo \
  "deb [arch=amd64 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

위의 명령어 입력했는데

E: Package 'docker-ce' has no installation candidate
E: Unable to locate package docker-ce-cli
E: Unable to locate package containerd.io
E: Couldn't find any package by glob 'containerd.io'

에러 난다면 아래 명령어 입력

sudo apt install -y docker.io

sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"

도커 버전 확인

sudo docker version

Client: Docker Engine - Community
Version: 20.10.21
API version: 1.41
Go version: go1.18.7
Git commit: baeda1f
Built: Tue Oct 25 18:02:21 2022
OS/Arch: linux/amd64
Context: default
Experimental: true

Server: Docker Engine - Community
Engine:
Version: 20.10.21
API version: 1.41 (minimum version 1.12)
Go version: go1.18.7
Git commit: 3056208
Built: Tue Oct 25 18:00:04 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.10
GitCommit: 770bd0108c32f3fb5c73ae1264f7e503fe7b2661
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0

위랑 비슷한 결과가 출력되면 성공!