分享Ubuntu19无法安装docker源问题

root@ubuntu:~# sudo add-apt-repository "deb [arch=amd64] https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu $(lsb_release -cs) stable"

Ign:1 https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu eoan InRelease

Err:2 https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu eoan Release
404 Not Found [IP: 218.104.71.170 443]
Hit:3 http://cn.archive.ubuntu.com/ubuntu eoan InRelease
Hit:4 http://cn.archive.ubuntu.com/ubuntu eoan-updates InRelease
Hit:5 http://cn.archive.ubuntu.com/ubuntu eoan-backports InRelease
Hit:6 http://cn.archive.ubuntu.com/ubuntu eoan-security InRelease
Reading package lists... Done 
E: The repository 'https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu eoan Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

deb [arch=amd64] https://download.docker.com/linux/ubuntu eoan stable
# deb-src [arch=amd64] https://download.docker.com/linux/ubuntu eoan stable
deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable 

root@uduntu:~# apt-get update
Get:1 http://cn.archive.ubuntu.com/ubuntu eoan InRelease [255 kB]
Get:2 http://cn.archive.ubuntu.com/ubuntu eoan-updates InRelease [88.4 kB]
Hit:3 http://cn.archive.ubuntu.com/ubuntu eoan-backports InRelease
Get:4 http://cn.archive.ubuntu.com/ubuntu eoan-security InRelease [92.9 kB]
Ign:5 https://download.docker.com/linux/ubuntu eoan InRelease                            
Err:6 https://download.docker.com/linux/ubuntu eoan Release                            
 404 Not Found [IP: 13.225.103.32 443]
Reading package lists... Done                                    
E: The repository 'https://download.docker.com/linux/ubuntu eoan Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
root@uduntu:~# apt search docker-ce
root@uduntu:~#

deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable

root@uduntu:~# apt-get update
Get:1 http://cn.archive.ubuntu.com/ubuntu eoan InRelease [255 kB]
Get:2 http://cn.archive.ubuntu.com/ubuntu eoan-updates InRelease [88.4 kB]
Hit:3 http://cn.archive.ubuntu.com/ubuntu eoan-backports InRelease
Get:4 http://cn.archive.ubuntu.com/ubuntu eoan-security InRelease [92.9 kB]
Get:5 https://download.docker.com/linux/ubuntu bionic InRelease [64.4 kB] 
Get:6 https://download.docker.com/linux/ubuntu bionic/stable amd64 Packages [9,594 B] Fetched 511 kB in 11s (48.3 kB/s) 
Reading package lists... Done
root@uduntu:~#

root@uduntu:~# apt search docker-ce
Sorting... Done
Full Text Search... Done
docker-ce/bionic,now 5:19.03.4~3-0~ubuntu-bionic amd64 [installed]
 Docker: the open-source application container engine

docker-ce-cli/bionic,now 5:19.03.4~3-0~ubuntu-bionic amd64 [installed,automatic]
 Docker CLI: the open-source application container engine

root@uduntu:~