2026.1.28 docker安装

准备工作

1，docker镜像：只读模板，包含应用和运行环境，github，阿里云，清华云

2，docker容器：镜像的运行实例，创建停止删除启动

3，docker仓库：存放镜像的地方（如Docker Hub）

CentOS 7安装docker

首先确保能够上网，输入

ping www.baidu.com

添加镜像源,输入

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

安装四步骤

# step 1: 安装必要的一些系统工具

sudo yum install -y yum-utils

2: 添加软件源信息

yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

# Step 3: 安装Docker

sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# Step 4: 开启Docker服务

sudo service docker start

查看docker版本信息，输入

docker version

镜像加速，输入完不要立刻回车!!!!!!，回车换一行，添加代码

EOF

mkdir /etc/docker/ sudo cat > /etc/docker/daemon.json << EOF { "registry-mirrors": [ "https://docker.hpcloud.cloud", "https://docker.m.daocloud.io", "https://docker.unsee.tech", "https://docker.1panel.live", "http://mirrors.ustc.edu.cn", "https://docker.chenby.cn", "http://mirror.azure.cn", "https://dockerpull.org", "https://dockerhub.icu", "https://hub.rat.dev" ] }

重启docker

sudo systemctl daemon-reload sudo systemctl restart docker

安装docker compose
# 下载 Docker Compose 最新版本

sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

# 授予执行权限

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

# 创建符号链接（支持 docker compose 命令，这一步如果显示“文件已存在”可以不用管）

sudo mkdir -p /usr/libexec/docker/cli-plugins sudo ln -s /usr/local/bin/docker-compose /usr/libexec/docker/cli-plugins/docker-compose

# 验证安装

docker compose version

安装成功会显示版本

Ubuntu安装

确保系统能够上网

# step 1: 安装必要的一些系统工具

sudo apt-get update

sudo apt-get install ca-certificates curl gnupg

# step 2: 信任 Docker 的 GPG 公钥

sudo install -m 0755 -d /etc/apt/keyrings

curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

sudo chmod a+r /etc/apt/keyrings/docker.gpg

# Step 3: 写入软件源信息

echo \

"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu \ "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \

sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# Step 4: 安装Docker

sudo apt-get update

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

安装校验，输入

docker version

配置镜像加速，

输入完不要立刻回车!!!!!!，回车换一行，添加代码

EOF

mkdir /etc/docker/ sudo cat > /etc/docker/daemon.json << EOF { "registry-mirrors": [ "https://docker.hpcloud.cloud", "https://docker.m.daocloud.io", "https://docker.unsee.tech", "https://docker.1panel.live", "http://mirrors.ustc.edu.cn", "https://docker.chenby.cn", "http://mirror.azure.cn", "https://dockerpull.org", "https://dockerhub.icu", "https://hub.rat.dev" ] }

重启docker

sudo systemctl daemon-reload sudo systemctl restart docker

安装docker compose

sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

赋予执行权限

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

创建符号链接（如果提示“文件已存在”可以不用管，进行下一步）

sudo mkdir -p /usr/libexec/docker/cli-plugins sudo ln -s /usr/local/bin/docker-compose /usr/libexec/docker/cli-plugins/docker-compose

验证安装

docker compose version