[系统运维]The repository ‘https: |download.docker.com/linux/ubuntu bionic Release‘ no longer has a Release fil

在公司的网络下，突然不能进行sudo apt update

aviana@aviana: /home/aviana  
?   sudo apt update                 
Hit:1 http://mirrors.tuna.tsinghua.edu.cn/ubuntu bionic InRelease
Ign:2 https://download.docker.com/linux/ubuntu bionic InRelease               
Err:3 https://download.docker.com/linux/ubuntu bionic Release
  Could not wait for server fd - select (11: Resource temporarily unavailable) [IP: 18.65.100.61 443]
Reading package lists... Done                       
E: The repository 'https://download.docker.com/linux/ubuntu bionic Release' no longer has 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.

尝试各种网络上的办法，都没有解决，回到家之后，使用家庭宽带网络，成功sudo apt update了