Ubuntu 20.04使用 Docker

tar -xzvf docker-19.03.0.tgz

cp docker/* /usr/bin/

cat >/etc/systemd/system/docker.service <<-EOF
[Unit]
Description=Docker Application Container Engine
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 -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload && systemctl start docker && systemctl enable docker.service

vim /etc/docker/daemon.json

{
    "log-driver":"json-file",
    "log-opts":{
        "max-size" :"10m","max-file":"4"
    },
    "registry-mirrors": ["https://6kx4zyno.mirror.aliyuncs.com"]
}

systemctl restart docker 

docker --version