Docker & Docker Compose安装教程

sudo apt-get remove -y docker docker-engine docker.io containerd runc 2>/dev/null || true

sudo apt-get update
sudo apt-get install -y \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

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

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

sudo apt-get update
sudo apt-get install -y \
    docker-ce \
    docker-ce-cli \
    containerd.io \
    docker-buildx-plugin \
    docker-compose-plugin

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json > /dev/null <<EOF
{
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m",
    "max-file": "3"
  },
  "storage-driver": "overlay2",
  "live-restore": true,
  "registry-mirrors": [
    "https://docker.1ms.run",
    "https://docker.xuanyuan.me"
  ]
}
EOF

sudo systemctl daemon-reload
sudo systemctl enable docker
sudo systemctl start docker

sudo usermod -aG docker $USER

# 检查 Docker 版本
docker --version

# 检查 Docker Compose 版本
docker compose version

# 检查 Docker 服务状态
sudo systemctl status docker

# 运行测试容器
docker run --rm hello-world

# 查看 Docker 详细信息
docker info

# 查看运行中的容器
docker ps

# 查看所有容器
docker ps -a

# 查看镜像列表
docker images

# 清理未使用资源
docker system prune -a

# 查看磁盘使用情况
docker system df

sudo journalctl -xeu docker.service

# 确认用户在 docker 组
groups $USER

# 重新加载组权限
newgrp docker

# 检查 Docker 网络
docker network ls

# 重置 Docker 网络
sudo systemctl restart docker