🚀 一键安装 Docker & Compose

#!/bin/bash

set -e

#####################################
# 🔐 判断当前是否为 root 用户
#####################################
if [ "$(id -u)" -ne 0 ]; then
  echo "❌  请用 root 用户或加 sudo 执行本脚本！"
  exit 1
fi

echo "🌐 正在检测国内/国外网络环境..."

#####################################
# 🌏 判断是否在中国
#####################################
is_in_china=false
country_code=$(curl -s --max-time 5 https://ipapi.co/country || echo "US")

if [[ "$country_code" == "CN" ]]; then
  is_in_china=true
  echo "✅ 检测到当前处于中国大陆，将使用腾讯云镜像源"
else
  echo "✅ 非中国大陆环境，使用 Docker 官方源"
fi

#####################################
# 🔧 准备必要组件
#####################################
echo "🔧 更新 apt 并安装依赖..."
apt-get update -y
apt-get install -y ca-certificates curl gnupg lsb-release apt-transport-https software-properties-common

# 创建密钥存储目录
install -m 0755 -d /etc/apt/keyrings

#####################################
# 📦 添加镜像源和 GPG KEY
#####################################
if [ "$is_in_china" = true ]; then
  # 腾讯云 GPG
  curl -fsSL https://mirrors.cloud.tencent.com/docker-ce/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
  chmod a+r /etc/apt/keyrings/docker.asc

  # 添加腾讯云镜像仓库
  echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://mirrors.cloud.tencent.com/docker-ce/linux/ubuntu \
  $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null

else
  # 官方 Docker GPG
  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
  chmod a+r /etc/apt/keyrings/docker.gpg

  # 添加官方仓库
  echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
fi

#####################################
# 🚀 安装 Docker + Compose Plugin
#####################################
echo "📦 安装 Docker 组件..."
apt-get update -y
apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# 启动 Docker 并开机自启
systemctl enable docker
systemctl start docker

#####################################
# 🚀 配置加速器（仅中国区域）
#####################################
if [ "$is_in_china" = true ]; then
  echo "⚙️ 配置中国区镜像加速器 https://docker.1ms.run"
  mkdir -p /etc/docker
  cat <<EOF > /etc/docker/daemon.json
{
  "registry-mirrors": ["https://docker.1ms.run"]
}
EOF
  systemctl daemon-reexec
  systemctl restart docker
fi

#####################################
# ✔️ 安装完成信息
#####################################
echo ""
echo "✅ Docker 和 Docker Compose 安装成功！"
echo "🧱 Docker 版本：$(docker --version)"
echo "🔧 Docker Compose 插件：$(docker compose version | head -n 1)"
echo ""
echo "📘 使用示例："
echo "   docker run hello-world"
echo "   docker compose up"