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Docker Engine + Compose v2

安裝

# 1. 前置套件
sudo apt-get update
sudo apt-get install -y ca-certificates curl

# 2. Docker 官方 GPG key
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# 3. 加入 apt 來源(noble = 24.04)
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# 4. 安裝(含 compose 插件)
sudo apt-get update
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# 5. 開機自啟並啟動
sudo systemctl enable --now docker

驗證版本(達標檢查)

docker --version          # 應顯示 Docker version 27.x 或更高(≥ 24.0 ✔)
docker compose version    # 應顯示 Docker Compose version v2.29.x 或更高(≥ v2.20 ✔)

選用(免 sudo)

sudo usermod -aG docker $USER
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