安装Docker
<ol>
<li>
<p>通过脚本自动安装</p>
<pre><code class="language-bash">export DOWNLOAD_URL=&quot;https://mirrors.bfsu.edu.cn/docker-ce&quot;
curl -fsSL https://raw.githubusercontent.com/docker/docker-install/master/install.sh | sh</code></pre>
</li>
<li>
<p>逐过程安装(二选一)</p>
<pre><code class="language-bash">#删掉以前装过的其他docker
for pkg in docker.io docker-doc docker-compose podman-docker containerd runc; do apt-get remove $pkg; done
#安装依赖
sudo apt-get update
sudo apt-get install ca-certificates curl gnupg
#信任 Docker 的 GPG 公钥并添加仓库
install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc
echo &quot;deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://mirrors.bfsu.edu.cn/docker-ce/linux/ubuntu &quot;$(. /etc/os-release &amp;&amp; echo &quot;$VERSION_CODENAME&quot;)&quot; stable&quot; | sudo tee /etc/apt/sources.list.d/docker.list &gt; /dev/null
#安装docker
sudo apt-get update
sudo apt-get -y install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin</code></pre>
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<li>
<p>X5系统存在的问题
Docker目前在nftables模式下无法工作，只能使用legacy模式</p>
<pre><code class="language-bash">#查看工作模式，括号内是nf_tables还是legacy
iptables --version
#切换到legacy模式
sudo update-alternatives --set iptables /usr/sbin/iptables-legacy
sudo update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy</code></pre>
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<li>
<p>设置非root账号不用sudo直接执行docker命令</p>
<pre><code class="language-bash">sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker
sudo systemctl restart docker</code></pre>
<p>重启后生效</p>
</li>
<li>测试docker
<pre><code class="language-bash">docker images #查看所有镜像
docker container ls #查看所有容器
docker ps #查看所有执行的容器</code></pre></li>
</ol>