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本文将简单介绍openEuler 22.03 LTS-SP3 系统使用dnf命令安装 docker 26.1.3、docker-compose。因为openEuler 22.03默认安装的docker是18.09版本，新版的docker安装可以参考本手册。
安装docker之前先需要将dnf的源更换为国内镜像源，加速软件更新和docker安装。

更新dnf源为华为源

cd /etc/yum.repos.d/
cp openEuler.repo openEuler.repo.bak
vi openEuler.repo
# 将dnf源更换为华为源，把文件中的 repo.openeuler.org 全部替换为 repo.huaweicloud.com/openeuler ，其他的不变。
# vi编辑器中替换命令参考：:%s#repo.openeuler.org#repo.huaweicloud.com/openeuler#g
# 更新本地DNF元数据缓存
sudo dnf makecache

更新dnf软件列表

sudo dnf update -y

安装软件包

sudo dnf install -y dnf-plugins-core
sudo dnf install lrzsz vim curl lsof unzip
sudo dnf install net-tools
sudo dnf install sysstat

配置系统时区

sudo timedatectl set-timezone Asia/Shanghai

关闭防火墙

# 查看防火墙状态
sudo systemctl status firewalld
# 关闭防火墙
sudo systemctl stop firewalld
# 关闭防火墙开机自启
sudo systemctl disable firewalld

安装docker

# 配置dnf的docker源
sudo dnf config-manager --add-repo=https://repo.huaweicloud.com/docker-ce/linux/centos/docker-ce.repo
# 将docker源改为华为源，加速docker安装
cd /etc/yum.repos.d/
cp docker-ce.repo docker-ce.repo.bak
sed -i 's+download.docker.com+repo.huaweicloud.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
# 注意：docker-ce.repo 中用 $releasever 变量代替当前系统的版本号，但此变量在 CentOS 中有效，在 openEuler 中无效，所以将该变量直接改为8。
sed -i 's+$releasever+8+'  /etc/yum.repos.d/docker-ce.repo
# 更新本地DNF元数据缓存
dnf makecache# 执行命令安装docker
sudo dnf install -y docker-ce docker-ce-cli containerd.io
# 创建docker工作目录
mkdir -p /data/docker
# 配置docker加速器和默认配置，亲测有效
sudo tee /etc/docker/daemon.json <<'EOF'
{"bip": "192.168.0.1/24","registry-mirrors": ["https://dockerpull.org","https://docker.1panel.dev","https://docker.1panel.live","https://docker.foreverlink.love","https://docker.fxxk.dedyn.io","https://docker.xn--6oq72ry9d5zx.cn","https://docker.zhai.cm","https://docker.5z5f.com","https://a.ussh.net","https://docker.cloudlayer.icu","https://hub.littlediary.cn","https://hub.crdz.gq","https://docker.unsee.tech","https://docker.kejilion.pro","https://registry.dockermirror.com","https://hub.rat.dev","https://dhub.kubesre.xyz","https://docker.nastool.de","https://docker.udayun.com","https://docker.rainbond.cc","https://hub.geekery.cn","https://docker.1panelproxy.com","https://atomhub.openatom.cn","https://docker.m.daocloud.io","https://docker.1ms.run","https://docker.linkedbus.com","https://dytt.online","https://func.ink","https://lispy.org","https://docker.xiaogenban1993.com"],"exec-opts": ["native.cgroupdriver=systemd"],"log-driver": "json-file","log-opts": {"max-size": "10m","max-file": "3","labels": "production_status","env": "os,customer"},"data-root": "/data/docker","storage-driver": "overlay2","default-address-pools": [{"base": "192.168.0.0/16","size":24}]
}
EOF# 设置docker自动重启
sudo systemctl enable docker
sudo systemctl daemon-reload
sudo systemctl restart docker# 安装dockercompose
sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
# 也可以使用如下命令安装docker-compose，但是安装的版本为2.0+
dnf install -y docker-compose-plugin# 查看docker和docker-compose版本
docker -v
docker-compose -v