# 1. 卸载旧版本（如有）
sudo apt-get remove docker docker-engine docker.io containerd runc 2>/dev/null

# 2. 安装依赖
sudo apt-get update
sudo apt-get install -y ca-certificates curl gnupg

# 3. 添加 Docker 官方 GPG 密钥
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

# 4. 添加仓库
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

# 5. 安装 Docker Engine + CLI + 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

# 6. 将当前用户加入 docker 组（免 sudo）
sudo usermod -aG docker $USER
newgrp docker

# 1. 卸载旧版本
sudo yum remove docker docker-client docker-client-latest \
  docker-common docker-latest docker-latest-logrotate \
  docker-logrotate docker-engine 2>/dev/null

# 2. 安装 yum-utils
sudo yum install -y yum-utils

# 3. 添加仓库
sudo yum-config-manager --add-repo \
  https://download.docker.com/linux/centos/docker-ce.repo

# 4. 安装
sudo yum install -y docker-ce docker-ce-cli containerd.io \
  docker-buildx-plugin docker-compose-plugin

# 5. 启动 Docker
sudo systemctl start docker
sudo systemctl enable docker

# 6. 免 sudo
sudo usermod -aG docker $USER
newgrp docker

# 检查 Docker Engine
docker --version
# Docker version 27.x.x, build xxxxxxx

# 检查 Compose 插件（注意是空格，不是连字符）
docker compose version
# Docker Compose version v2.x.x

# 检查 Compose 版本详情
docker compose version --short
# 2.x.x

docker compose version

# PowerShell 或 CMD
docker compose version

# 获取最新版本号（或手动指定）
COMPOSE_VERSION=$(curl -s https://api.github.com/repos/docker/compose/releases/latest \
  | grep '"tag_name"' | sed -E 's/.*"v([^"]+)".*/\1/')

# 下载二进制（x86_64 架构）
mkdir -p ~/.docker/cli-plugins/
curl -SL "https://github.com/docker/compose/releases/download/v${COMPOSE_VERSION}/docker-compose-linux-x86_64" \
  -o ~/.docker/cli-plugins/docker-compose

# 赋予执行权限
chmod +x ~/.docker/cli-plugins/docker-compose

# 验证
docker compose version

# 替换 URL 中的架构标识
curl -SL "https://github.com/docker/compose/releases/download/v${COMPOSE_VERSION}/docker-compose-linux-aarch64" \
  -o ~/.docker/cli-plugins/docker-compose
chmod +x ~/.docker/cli-plugins/docker-compose

# V1 使用连字符
docker-compose --version
# 如果输出版本号，说明有 V1 残留

# V2 使用空格
docker compose version

# pip 安装的
pip uninstall docker-compose

# 二进制安装的
sudo rm /usr/local/bin/docker-compose

# apt 安装的
sudo apt-get remove docker-compose

# Docker 官方提供了兼容 V1 语法的 V2 独立二进制
# 文件名仍为 docker-compose，但内核是 V2 (Go)

# 下载
COMPOSE_VERSION="v2.29.1"  # 替换为实际版本
sudo curl -SL \
  "https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}/docker-compose-linux-x86_64" \
  -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

# 验证
docker-compose --version

# 下载补全脚本
sudo curl -L https://raw.githubusercontent.com/docker/compose/v2/contrib/completion/bash/docker-compose \
  -o /etc/bash_completion.d/docker-compose

# 重新加载
source /etc/bash_completion.d/docker-compose

# 下载补全脚本
mkdir -p ~/.zsh/completion
curl -L https://raw.githubusercontent.com/docker/compose/v2/contrib/completion/zsh/_docker-compose \
  -o ~/.zsh/completion/_docker-compose

# ~/.zshrc 中添加
fpath=(~/.zsh/completion $fpath)
autoload -Uz compinit && compinit

# 下载补全脚本
mkdir -p ~/.config/fish/completions
curl -L https://raw.githubusercontent.com/docker/compose/v2/contrib/completion/fish/docker-compose.fish \
  -o ~/.config/fish/completions/docker-compose.fish

# 查看 Docker 配置目录
docker info --format '{{.DockerRootDir}}'
# /var/lib/docker

# Compose 临时文件位置
ls /tmp/compose-*

#!/bin/bash
echo "=== Docker Compose 环境检查 ==="

# 1. Docker Engine
echo -n "Docker Engine: "
docker --version 2>/dev/null || echo "❌ 未安装"

# 2. Docker 守护进程
echo -n "Docker Daemon: "
docker info >/dev/null 2>&1 && echo "✅ 运行中" || echo "❌ 未运行"

# 3. Compose V2
echo -n "Compose V2: "
docker compose version >/dev/null 2>&1 && echo "✅ $(docker compose version --short)" || echo "❌ 未安装"

# 4. 旧版 V1
echo -n "Compose V1: "
docker-compose --version 2>/dev/null && echo "⚠️ 建议卸载" || echo "✅ 未安装（或已是V2别名）"

# 5. Buildx
echo -n "Buildx: "
docker buildx version >/dev/null 2>&1 && echo "✅ $(docker buildx version --short)" || echo "⚠️ 未安装（可选）"

# 6. Shell 补全
echo -n "Shell 补全: "
type _docker_compose >/dev/null 2>&1 && echo "✅ 已配置" || echo "⚠️ 未配置（可选）"

echo ""
echo "=== 快速功能测试 ==="

# 7. Compose 功能测试
cd /tmp && mkdir -p compose-test && cd compose-test
cat > compose.yaml << 'EOF'
services:
  hello:
    image: hello-world
EOF

docker compose up 2>/dev/null
if [ $? -eq 0 ]; then
  echo "✅ Compose 功能正常"
else
  echo "❌ Compose 功能异常"
fi

cd /tmp && rm -rf compose-test

# Docker daemon 镜像加速（/etc/docker/daemon.json）
sudo tee /etc/docker/daemon.json << 'EOF'
{
  "registry-mirrors": [
    "https://mirror.ccs.tencentyun.com",
    "https://docker.1panel.live"
  ]
}
EOF

sudo systemctl daemon-reload
sudo systemctl restart docker