更新源
sudo apt-get remove docker docker-engine docker.io containerd runc如果提示：
root@SAFEHOSTNAME:~# sudo apt-get update
sudo: unable to resolve host SAFEHOSTNAME: Name or service not known
Get:1 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get:2 http://deb.debian.org/debian buster InRelease [122 kB]
Get:3 http://deb.debian.org/debian buster-updates InRelease [51.9 kB]
Reading package lists... Done
E: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Version' value from '10.7' to '10.10'
E: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
E: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
root@SAFEHOSTNAME:~# 可加--allow-releaseinfo-change解决：
root@SAFEHOSTNAME:~#
root@SAFEHOSTNAME:~# apt-get --allow-releaseinfo-change update
Get:1 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get:2 http://deb.debian.org/debian buster InRelease [122 kB]
Get:3 http://deb.debian.org/debian buster-updates InRelease [51.9 kB]
Get:4 http://security.debian.org/debian-security buster/updates/main Sources [200 kB]
Get:5 http://security.debian.org/debian-security buster/updates/main amd64 Packages [303 kB]
Get:6 http://security.debian.org/debian-security buster/updates/main Translation-en [159 kB]
Get:7 http://deb.debian.org/debian buster/main Sources [7836 kB]
Get:8 http://deb.debian.org/debian buster/main amd64 Packages [7907 kB]
Get:9 http://deb.debian.org/debian buster/main Translation-en [5968 kB]
Get:10 http://deb.debian.org/debian buster-updates/main Sources.diff/Index [7624 B]
Ign:10 http://deb.debian.org/debian buster-updates/main Sources.diff/Index
Get:11 http://deb.debian.org/debian buster-updates/main amd64 Packages.diff/Index [7624 B]
Get:12 http://deb.debian.org/debian buster-updates/main Translation-en.diff/Index [5164 B]
Get:13 http://deb.debian.org/debian buster-updates/main amd64 Packages 2020-12-24-1401.30.pdiff [286 B]
Get:14 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-01-29-2000.47.pdiff [408 B]
Get:15 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-02-07-1359.56.pdiff [2302 B]
Get:16 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-04-22-1401.14.pdiff [1996 B]
Get:17 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-04-23-1401.02.pdiff [1127 B]
Get:18 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-06-21-1401.46.pdiff [656 B]
Get:19 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-06-23-1401.37.pdiff [4999 B]
Get:19 http://deb.debian.org/debian buster-updates/main amd64 Packages 2021-06-23-1401.37.pdiff [4999 B]
Get:20 http://deb.debian.org/debian buster-updates/main Translation-en 2021-02-07-1359.56.pdiff [1506 B]
Get:21 http://deb.debian.org/debian buster-updates/main Translation-en 2021-04-22-1401.14.pdiff [1408 B]
Get:22 http://deb.debian.org/debian buster-updates/main Translation-en 2021-06-21-1401.46.pdiff [719 B]
Get:23 http://deb.debian.org/debian buster-updates/main Translation-en 2021-06-23-1401.37.pdiff [6585 B]
Get:23 http://deb.debian.org/debian buster-updates/main Translation-en 2021-06-23-1401.37.pdiff [6585 B]
Get:24 http://deb.debian.org/debian buster-updates/main Sources [16.6 kB]
Fetched 22.4 MB in 6s (3459 kB/s)
Reading package lists... Done
N: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Version' value from '10.7' to '10.10'
N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
N: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates'
root@SAFEHOSTNAME:~#
root@SAFEHOSTNAME:~# 安装依赖包：
sudo apt-get update
sudo apt-get install \
apt-transport-https \
ca-certificates \
curl \
gnupg \
lsb-release添加官方GPG key
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg设置stable repository
echo \
"deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null更新并安装docker包
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io验证安装成功
sudo docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
b8dfde127a29: Pull complete
Digest: sha256:7d91b69e04a9029b99f3585aaaccae2baa80bcf318f4a5d2165a9898cd2dc0a1
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
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