installDocker

#!/bin/bash
set -e

# 1️⃣ 환경 변수
DOCKER_GPG_ASC_URL="https://download.docker.com/linux/ubuntu/gpg"
DOCKER_KEYRING="/usr/share/keyrings/docker-archive-keyring.gpg"
DOCKER_LIST="/etc/apt/sources.list.d/docker.list"

# 2️⃣ 필수 패키지 설치
sudo apt update
sudo apt install -y curl gnupg lsb-release

# 3️⃣ GPG 키 다운로드 및 변환
curl -fsSL $DOCKER_GPG_ASC_URL -o docker.asc
sudo gpg --dearmor -o $DOCKER_KEYRING docker.asc
rm docker.asc

# 4️⃣ Docker 저장소 추가
echo "deb [arch=$(dpkg --print-architecture) signed-by=$DOCKER_KEYRING] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee $DOCKER_LIST > /dev/null

# 5️⃣ 패키지 목록 업데이트 및 Docker 설치
sudo apt update
sudo apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# 6️⃣ 설치 확인
docker --version
echo "Docker 설치 완료!"