ubuntu 安装 docker 详细步骤
登录，ubuntu版本 22.04
wqbboy@192.168.1.2's password:
Welcome to Ubuntu 22.04.5 LTS (GNU/Linux 5.15.0-153-generic x86_64)* Documentation: https://help.ubuntu.com* Management: https://landscape.canonical.com* Support: https://ubuntu.com/proSystem information as of Mon Sep 8 01:27:24 PM UTC 2025System load: 1.99Usage of /: 61.3% of 23.16GBMemory usage: 53%Swap usage: 0%Processes: 193Users logged in: 0IPv4 address for enp0s3: 192.168.1.2IPv6 address for enp0s3: 2409:8a4c:7255:f380:a00:27ff:fe63:1f6d* Strictly confined Kubernetes makes edge and IoT secure. Learn how MicroK8sjust raised the bar for easy, resilient and secure K8s cluster deployment.https://ubuntu.com/engage/secure-kubernetes-at-the-edgeExpanded Security Maintenance for Applications is not enabled.54 updates can be applied immediately.
To see these additional updates run: apt list --upgradableEnable ESM Apps to receive additional future security updates.
See https://ubuntu.com/esm or run: sudo pro statusNew release '24.04.3 LTS' available.
Run 'do-release-upgrade' to upgrade to it.Last login: Mon Sep 8 13:27:24 2025查看docker
wqbboy@mail:~$ docker --version
Command 'docker' not found, but can be installed with:
sudo snap install docker # version 28.1.1+1, or
sudo apt install docker.io # version 27.5.1-0ubuntu3~22.04.2
sudo apt install podman-docker # version 3.4.4+ds1-1ubuntu1.22.04.3
See 'snap info docker' for additional versions.安装前提依赖
wqbboy@mail:~$ sudo -i
[sudo] password for wqbboy:
root@mail:~# apt-get update
Hit:1 http://mirrors.aliyun.com/ubuntu jammy InRelease
Get:2 http://mirrors.aliyun.com/ubuntu jammy-updates InRelease [128 kB]
Get:3 http://mirrors.aliyun.com/ubuntu jammy-backports InRelease [127 kB]
Get:4 http://security.ubuntu.com/ubuntu jammy-security InRelease [129 kB]
Fetched 384 kB in 5s (76.9 kB/s)
Reading package lists... Done
root@mail:~# apt-get install ca-certificates curl gnupg lsb-release
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
lsb-release is already the newest version (11.1.0ubuntu4).
lsb-release set to manually installed.
ca-certificates is already the newest version (20240203~22.04.1).
ca-certificates set to manually installed.
curl is already the newest version (7.81.0-1ubuntu1.20).
gnupg is already the newest version (2.2.27-3ubuntu2.4).
gnupg set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 53 not upgraded.安装GPG证书(aliyun)
root@mail:~# curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | s udo apt-key add -
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (s ee apt-key(8)).
OK写入软件源信息
root@mail:~# add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/dock er-ce/linux/ubuntu $(lsb_release -cs) stable"
Repository: 'deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu j ammy stable'
Description:
Archive for codename: jammy components: stable
More info: http://mirrors.aliyun.com/docker-ce/linux/ubuntu
Adding repository.
Press [ENTER] to continue or Ctrl-c to cancel.
Adding deb entry to /etc/apt/sources.list.d/archive_uri-http_mirrors_aliyun_com_ docker-ce_linux_ubuntu-jammy.list
Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-http_mirror s_aliyun_com_docker-ce_linux_ubuntu-jammy.list
Hit:1 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:2 http://mirrors.aliyun.com/ubuntu jammy InRelease
Hit:3 http://mirrors.aliyun.com/ubuntu jammy-updates InRelease
Hit:4 http://mirrors.aliyun.com/ubuntu jammy-backports InRelease
Get:5 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy InRelease [48.8 kB]
Get:6 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy/stable amd64 Packag es [55.2 kB]
Fetched 104 kB in 11s (9,650 B/s)
Reading package lists... Done
W: http://mirrors.aliyun.com/docker-ce/linux/ubuntu/dists/jammy/InRelease: Key i s stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATI ON section in apt-key(8) for details.cat 查看证书
root@mail:~# cat /etc/apt/sources.list.d/archive_uri-http_mirrors_aliyun_com_docker-ce_linux_ubuntu-jammy.list
deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy stable
# deb-src [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy stable
安装docker安装新版本
root@mail:~# apt-get install docker-ce docker-ce-cli containerd.io
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:docker-buildx-plugin docker-ce-rootless-extras docker-compose-plugin libslirp0 pigz slirp4netns
Suggested packages:cgroupfs-mount | cgroup-lite docker-model-plugin
The following NEW packages will be installed:containerd.io docker-buildx-plugin docker-ce docker-ce-cli docker-ce-rootless-extrasdocker-compose-plugin libslirp0 pigz slirp4netns
0 upgraded, 9 newly installed, 0 to remove and 53 not upgraded.
Need to get 103 MB of archives.
After this operation, 431 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy/stable amd64 containerd.io amd64 1.7.27-1 [30.5 MB]
Get:2 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy/stable amd64 docker-ce-cli amd64 5:28.4.0-1~ubuntu.22.04~jammy [16.5 MB]
Get:3 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy/stable amd64 docker-ce amd64 5:28.4.0-1~ubuntu.22.04~jammy [19.7 MB]
Get:4 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 pigz amd64 2.6-1 [63.6 kB]
Get:5 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy/stable amd64 docker-buildx-plugin amd64 0.27.0-1~ubuntu.22.04~jammy [15.9 MB]
Get:6 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy/stable amd64 docker-ce-rootless-extras amd64 5:28.4.0-1~ubuntu.22.04~jammy [6,479 kB]
Get:7 http://mirrors.aliyun.com/docker-ce/linux/ubuntu jammy/stable amd64 docker-compose-plugin amd64 2.39.2-1~ubuntu.22.04~jammy [14.2 MB]
Get:8 http://mirrors.aliyun.com/ubuntu jammy/main amd64 libslirp0 amd64 4.6.1-1build1 [61.5 kB]
Get:9 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 slirp4netns amd64 1.0.1-2 [28.2 kB]
Fetched 103 MB in 10s (10.3 MB/s)
Selecting previously unselected package containerd.io.
(Reading database ... 90305 files and directories currently installed.)
Preparing to unpack .../0-containerd.io_1.7.27-1_amd64.deb ...
Unpacking containerd.io (1.7.27-1) ...
Selecting previously unselected package docker-ce-cli.
Preparing to unpack .../1-docker-ce-cli_5%3a28.4.0-1~ubuntu.22.04~jammy_amd64.deb ...
Unpacking docker-ce-cli (5:28.4.0-1~ubuntu.22.04~jammy) ...
Selecting previously unselected package docker-ce.
Preparing to unpack .../2-docker-ce_5%3a28.4.0-1~ubuntu.22.04~jammy_amd64.deb ...
Unpacking docker-ce (5:28.4.0-1~ubuntu.22.04~jammy) ...
Selecting previously unselected package pigz.
Preparing to unpack .../3-pigz_2.6-1_amd64.deb ...
Unpacking pigz (2.6-1) ...
Selecting previously unselected package docker-buildx-plugin.
Preparing to unpack .../4-docker-buildx-plugin_0.27.0-1~ubuntu.22.04~jammy_amd64.deb ...
Unpacking docker-buildx-plugin (0.27.0-1~ubuntu.22.04~jammy) ...
Selecting previously unselected package docker-ce-rootless-extras.
Preparing to unpack .../5-docker-ce-rootless-extras_5%3a28.4.0-1~ubuntu.22.04~jammy_amd64.deb ...
Unpacking docker-ce-rootless-extras (5:28.4.0-1~ubuntu.22.04~jammy) ...
Selecting previously unselected package docker-compose-plugin.
Preparing to unpack .../6-docker-compose-plugin_2.39.2-1~ubuntu.22.04~jammy_amd64.deb ...
Unpacking docker-compose-plugin (2.39.2-1~ubuntu.22.04~jammy) ...
Selecting previously unselected package libslirp0:amd64.
Preparing to unpack .../7-libslirp0_4.6.1-1build1_amd64.deb ...
Unpacking libslirp0:amd64 (4.6.1-1build1) ...
Selecting previously unselected package slirp4netns.
Preparing to unpack .../8-slirp4netns_1.0.1-2_amd64.deb ...
Unpacking slirp4netns (1.0.1-2) ...
Setting up docker-buildx-plugin (0.27.0-1~ubuntu.22.04~jammy) ...
Setting up containerd.io (1.7.27-1) ...
Created symlink /etc/systemd/system/multi-user.target.wants/containerd.service → /lib/systemd/system/containerd.service.
Setting up docker-compose-plugin (2.39.2-1~ubuntu.22.04~jammy) ...
Setting up docker-ce-cli (5:28.4.0-1~ubuntu.22.04~jammy) ...
Setting up libslirp0:amd64 (4.6.1-1build1) ...
Setting up pigz (2.6-1) ...
Setting up docker-ce-rootless-extras (5:28.4.0-1~ubuntu.22.04~jammy) ...
Setting up slirp4netns (1.0.1-2) ...
Setting up docker-ce (5:28.4.0-1~ubuntu.22.04~jammy) ...
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /lib/systemd/system/docker.service.
Created symlink /etc/systemd/system/sockets.target.wants/docker.socket → /lib/systemd/system/docker.socket.
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for libc-bin (2.35-0ubuntu3.10) ...
Scanning processes...
Scanning linux images...Running kernel seems to be up-to-date.No services need to be restarted.No containers need to be restarted.No user sessions are running outdated binaries.No VM guests are running outdated hypervisor (qemu) binaries on this host.
root@mail:~#增加用户组，查看docker状态
root@mail:~# groupadd docker
groupadd: group 'docker' already exists
root@mail:~# systemctl status docker
● docker.service - Docker Application Container EngineLoaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)Active: active (running) since Mon 2025-09-08 13:32:44 UTC; 7min ago
TriggeredBy: ● docker.socketDocs: https://docs.docker.comMain PID: 4863 (dockerd)Tasks: 10Memory: 22.9MCPU: 679msCGroup: /system.slice/docker.service└─4863 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sockSep 08 13:32:43 mail dockerd[4863]: time="2025-09-08T13:32:43.223417116Z" level=info msg="detected 1>
Sep 08 13:32:43 mail dockerd[4863]: time="2025-09-08T13:32:43.310117771Z" level=info msg="Creating a>
Sep 08 13:32:43 mail dockerd[4863]: time="2025-09-08T13:32:43.933020832Z" level=info msg="Loading co>
Sep 08 13:32:44 mail dockerd[4863]: time="2025-09-08T13:32:44.435076303Z" level=info msg="Loading co>
Sep 08 13:32:44 mail dockerd[4863]: time="2025-09-08T13:32:44.491334552Z" level=info msg="Docker dae>
Sep 08 13:32:44 mail dockerd[4863]: time="2025-09-08T13:32:44.491741783Z" level=info msg="Initializi>
Sep 08 13:32:44 mail dockerd[4863]: time="2025-09-08T13:32:44.552230002Z" level=info msg="Completed >
Sep 08 13:32:44 mail dockerd[4863]: time="2025-09-08T13:32:44.562534686Z" level=info msg="Daemon has>
Sep 08 13:32:44 mail dockerd[4863]: time="2025-09-08T13:32:44.563030422Z" level=info msg="API listen>
Sep 08 13:32:44 mail systemd[1]: Started Docker Application Container Engine.
lines 1-22/22 (END)查看docker版本
root@mail:~# docker --version
Docker version 28.4.0, build d8eb465
root@mail:~# docker-compose --version
Command 'docker-compose' not found, but can be installed with:
snap install docker # version 28.1.1+1, or
apt install docker-compose # version 1.29.2-1
See 'snap info docker' for additional versions.
root@mail:~# docker --version
Docker version 28.4.0, build d8eb465docker换源
root@mail:~# vi /etc/docker/daemon.json安装docker-compose
root@mail:~# apt-get install docker-compose
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:python3-docker python3-dockerpty python3-docopt python3-dotenv python3-texttablepython3-websocket
Recommended packages:docker.io
The following NEW packages will be installed:docker-compose python3-docker python3-dockerpty python3-docopt python3-dotenv python3-texttablepython3-websocket
0 upgraded, 7 newly installed, 0 to remove and 53 not upgraded.
Need to get 290 kB of archives.
After this operation, 1,545 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 python3-websocket all 1.2.3-1 [34.7 kB]
Get:2 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 python3-docker all 5.0.3-1 [89.3 kB]
Get:3 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 python3-dockerpty all 0.4.1-2 [11.1 kB]
Get:4 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 python3-docopt all 0.6.2-4 [26.9 kB]
Get:5 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 python3-dotenv all 0.19.2-1 [20.5 kB]
Get:6 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 python3-texttable all 1.6.4-1 [11.4 kB]
Get:7 http://mirrors.aliyun.com/ubuntu jammy/universe amd64 docker-compose all 1.29.2-1 [95.8 kB]
Fetched 290 kB in 0s (961 kB/s)
Selecting previously unselected package python3-websocket.
(Reading database ... 90564 files and directories currently installed.)
Preparing to unpack .../0-python3-websocket_1.2.3-1_all.deb ...
Unpacking python3-websocket (1.2.3-1) ...
Selecting previously unselected package python3-docker.
Preparing to unpack .../1-python3-docker_5.0.3-1_all.deb ...
Unpacking python3-docker (5.0.3-1) ...
Selecting previously unselected package python3-dockerpty.
Preparing to unpack .../2-python3-dockerpty_0.4.1-2_all.deb ...
Unpacking python3-dockerpty (0.4.1-2) ...
Selecting previously unselected package python3-docopt.
Preparing to unpack .../3-python3-docopt_0.6.2-4_all.deb ...
Unpacking python3-docopt (0.6.2-4) ...
Selecting previously unselected package python3-dotenv.
Preparing to unpack .../4-python3-dotenv_0.19.2-1_all.deb ...
Unpacking python3-dotenv (0.19.2-1) ...
Selecting previously unselected package python3-texttable.
Preparing to unpack .../5-python3-texttable_1.6.4-1_all.deb ...
Unpacking python3-texttable (1.6.4-1) ...
Selecting previously unselected package docker-compose.
Preparing to unpack .../6-docker-compose_1.29.2-1_all.deb ...
Unpacking docker-compose (1.29.2-1) ...
Setting up python3-dotenv (0.19.2-1) ...
Setting up python3-texttable (1.6.4-1) ...
Setting up python3-docopt (0.6.2-4) ...
Setting up python3-websocket (1.2.3-1) ...
Setting up python3-dockerpty (0.4.1-2) ...
Setting up python3-docker (5.0.3-1) ...
Setting up docker-compose (1.29.2-1) ...
Processing triggers for man-db (2.10.2-1) ...
Scanning processes...
Scanning linux images...Running kernel seems to be up-to-date.No services need to be restarted.No containers need to be restarted.No user sessions are running outdated binaries.No VM guests are running outdated hypervisor (qemu) binaries on this host.安装必要的一些系统工具
root@mail:~# apt-get -y install apt-transport-https ca-certificates curl software-properties-common
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
ca-certificates is already the newest version (20240203~22.04.1).
curl is already the newest version (7.81.0-1ubuntu1.20).
software-properties-common is already the newest version (0.99.22.9).
software-properties-common set to manually installed.
The following NEW packages will be installed:apt-transport-https
0 upgraded, 1 newly installed, 0 to remove and 53 not upgraded.
Need to get 1,510 B of archives.
After this operation, 170 kB of additional disk space will be used.
Get:1 http://mirrors.aliyun.com/ubuntu jammy-updates/universe amd64 apt-transport-https all 2.4.14 [1,510 B]
Fetched 1,510 B in 0s (16.4 kB/s)
Selecting previously unselected package apt-transport-https.
(Reading database ... 90824 files and directories currently installed.)
Preparing to unpack .../apt-transport-https_2.4.14_all.deb ...
Unpacking apt-transport-https (2.4.14) ...
Setting up apt-transport-https (2.4.14) ...
Scanning processes...
Scanning linux images...Running kernel seems to be up-to-date.No services need to be restarted.No containers need to be restarted.No user sessions are running outdated binaries.No VM guests are running outdated hypervisor (qemu) binaries on this host.重启docker，报错，只能删除/etc/docker/daemon.json
root@mail:~# service docker restart
Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xeu docker.service" for details.
root@mail:~# docker --version
Docker version 28.4.0, build d8eb465
root@mail:~# docker-compose --version
docker-compose version 1.29.2, build unknown
root@mail:~# vi /etc/docker/daemon.json
root@mail:~# service docker restart
Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xeu docker.service" for details.
root@mail:~# vi /etc/docker/daemon.json
root@mail:~# service docker restart
Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xeu docker.service" for details.
root@mail:~# vi /etc/docker/daemon.json
root@mail:~# service docker restart
Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xeu docker.service" for details.
root@mail:~# systemctl status docker.service
× docker.service - Docker Application Container EngineLoaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)Active: failed (Result: exit-code) since Mon 2025-09-08 13:47:59 UTC; 6s ago
TriggeredBy: × docker.socketDocs: https://docs.docker.comProcess: 6895 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (>Main PID: 6895 (code=exited, status=1/FAILURE)CPU: 64msSep 08 13:47:59 mail systemd[1]: docker.service: Scheduled restart job, restart counter is at 3.
Sep 08 13:47:59 mail systemd[1]: Stopped Docker Application Container Engine.
Sep 08 13:47:59 mail systemd[1]: docker.service: Start request repeated too quickly.
Sep 08 13:47:59 mail systemd[1]: docker.service: Failed with result 'exit-code'.
Sep 08 13:47:59 mail systemd[1]: Failed to start Docker Application Container Engine.root@mail:~# vi /etc/docker/daemon.json
root@mail:~# mv /etc/docker/daemon.json /etc/docker/daemon.jsonbak
root@mail:~# systemctl status docker.service
× docker.service - Docker Application Container EngineLoaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)Active: failed (Result: exit-code) since Mon 2025-09-08 13:47:59 UTC; 1min 9s ago
TriggeredBy: × docker.socketDocs: https://docs.docker.comProcess: 6895 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (>Main PID: 6895 (code=exited, status=1/FAILURE)CPU: 64msSep 08 13:47:59 mail systemd[1]: docker.service: Scheduled restart job, restart counter is at 3.
Sep 08 13:47:59 mail systemd[1]: Stopped Docker Application Container Engine.
Sep 08 13:47:59 mail systemd[1]: docker.service: Start request repeated too quickly.
Sep 08 13:47:59 mail systemd[1]: docker.service: Failed with result 'exit-code'.
Sep 08 13:47:59 mail systemd[1]: Failed to start Docker Application Container Engine.
...skipping...
× docker.service - Docker Application Container EngineLoaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)Active: failed (Result: exit-code) since Mon 2025-09-08 13:47:59 UTC; 1min 9s ago
TriggeredBy: × docker.socketDocs: https://docs.docker.comProcess: 6895 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (>Main PID: 6895 (code=exited, status=1/FAILURE)CPU: 64msSep 08 13:47:59 mail systemd[1]: docker.service: Scheduled restart job, restart counter is at 3.
Sep 08 13:47:59 mail systemd[1]: Stopped Docker Application Container Engine.
Sep 08 13:47:59 mail systemd[1]: docker.service: Start request repeated too quickly.
Sep 08 13:47:59 mail systemd[1]: docker.service: Failed with result 'exit-code'.
Sep 08 13:47:59 mail systemd[1]: Failed to start Docker Application Container Engine.
~重启
root@mail:~# service docker restart
root@mail:~# docker-compose --version
docker-compose version 1.29.2, build unknown
root@mail:~#配置daemon.json
root@mail:~# vi /etc/docker/daemon.jsonroot@mail:~# cat /etc/docker/daemon.json{"registry-mirrors": ["http://hub-mirror.c.163.com"]
}root@mail:~# service docker restart
解决Error response from daemon: Get https://registry-1.docker.io/v2/library/hello-world/manifests/问题
root@mail:~/snap/lxd# docker image pull library/hello-world
Using default tag: latest
Error response from daemon: Get "https://registry-1.docker.io/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)第一步：**通过 dig @114.114.114.114 registry-1.docker.io找到可用IP
root@mail:~/snap/lxd# dig @114.114.114.114 registry-1.docker.io; <<>> DiG 9.18.30-0ubuntu0.22.04.2-Ubuntu <<>> @114.114.114.114 registry-1.docker.io
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65511
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;registry-1.docker.io. IN A;; ANSWER SECTION:
registry-1.docker.io. 131 IN A 31.13.76.99;; Query time: 28 msec
;; SERVER: 114.114.114.114#53(114.114.114.114) (UDP)
;; WHEN: Mon Sep 08 14:14:18 UTC 2025
;; MSG SIZE rcvd: 65root@mail:~/snap/lxd#尝试修改/etc/hosts强制docker.io相关的域名解析到其它可用IP
root@mail:~/snap/lxd# vi /etc/hosts
root@mail:~/snap/lxd# cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 mail.xgpolice.com mail# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters31.13.76.99 registry-1.docker.io保存之后重试:
root@mail:~/snap/lxd# docker image pull library/hello-world
Using default tag: latest