1、下载、上传docker-20.10.0.tgz压缩包至服务器,其中,docker下载地址https://download.docker.com/linux/static/stable/x86_64/
2、新建安装docker脚本docker-install.sh
#!/usr/bin/env bash
tar -xvf docker-20.10.0.tgz
cp docker/* /usr/bin/
cat <<-EOF >/etc/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performan