Create Ubuntu 18.04 LTS docker image
一: 环境说明
- 物理机器 macbook pro
- 虚拟机 VirtualBox
- 宿主系统 Ubuntu 18.04 LTS
- 宿主系统 Docker 版本 Docker version 18.06.1-ce, build e68fc7a
首先在虚拟机中安装好宿主系统,配置好基础网络环境,并切换到root账户下.
二: 制作 Ubuntu 18.04 LTS docker镜像
1. 安装 debootstrap
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# apt install debootstrap |
2. 用 debootstrap 构建 Ubuntu 18.04 LTS 的 rootfs
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# mkdir -p /data0/docker/images/ubuntu-18.04-lts # debootstrap --verbose --arch=amd64 bionic /data0/docker/images/ubuntu-18.04-lts http://mirrors.aliyun.com/ubuntu # chroot /data0/docker/images/ubuntu-18.04-lts /bin/bash # 切换到基础系统中 |
三: 配置基础系统
1.修改默认的源
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# mv /etc/apt/sources.list /etc/apt/sources.list.bak # vi /etc/apt/sources.list deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse |
2. 安装基础包
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# apt -y update && apt -y upgrade && apt -y install vim locales lsof |
3. 配置字符集为 en_US.UTF-8 UTF-8
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# dpkg-reconfigure locales # echo 'export LC_ALL=C' >> /etc/profile |
4. 配置时区
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# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime |
5. 清理系统,退出当前 rootfs
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# rm -Rf /tmp/* && apt-get autoremove && apt-get clean && apt clean && exit |
四: 打包并创建 Docker 镜像
需要宿主机安装配置好docker运行环境,如果未安装,则使用以下方法安装:
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# apt -y install docker.io # systemctl start docker && systemctl enable docker |
1. 打包镜像
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# tar -C /data0/docker/images/ubuntu-18.04-lts -c . | sudo docker import - ubuntu-18.04-lts |
2. 查看是否打包成功
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# docker images REPOSITORY TAG IMAGE ID CREATED SIZE kernelstudio/ubuntu latest 1d0b29b1a99f 34 minutes ago 551MB |
五: 测试打包的镜像
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# docker run ubuntu-18.04-lts /bin/sh -c "echo hello" hello |
六: 发布到官方仓库，需自提前注册好账户
1. 输入用户名密码登录
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# docker login |
2. 创建一个名为的 kernelstudio/ubuntu 标签
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# docker tag ubuntu-18.04-lts kernelstudio/ubuntu |
3. 推送到官方仓库
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# docker push kernelstudio/ubuntu |
七: 备注
如果要把当前的系统环境(宿主系统)打包为容器基础镜像，主要是 rootfs 的处理,则使用以下命令
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# tar --numeric-owner --exclude=/proc --exclude=/sys -C / -c . | sudo docker import - image-name-version |
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