ubuntu docker相關錯誤記錄

1. 添加 docker 官方 GPG key

   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

   報錯：

   gpg: can't connect to the agent: IPC connect call failed

   解決方法：

   apt remove gpg
   apt install gnupg1

2.  設置 docker 穩定版倉庫

   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

   報錯：

   add-apt-repository command not found

   解決方法：

   apt-get install software-properties-common

3. 更新源

   sudo apt-get update
   

   報錯：

   Hit:1 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal InRelease
   Hit:2 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates InRelease
   Hit:3 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-backports InRelease
   Hit:4 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-security InRelease
   Ign:5 https://download.docker.com/linux/ubuntu focal InRelease
   Err:6 https://download.docker.com/linux/ubuntu focal Release
     404  Not Found [IP: 13.227.60.113 443]
   Reading package lists... Done
   E: The repository 'https://download.docker.com/linux/ubuntu focal 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.

   解決方法：在 /etc/apt/source.list 文件中增加如下配置

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

   再次更新源

   sudo apt-get update
   

   報錯：

   Hit:1 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal InRelease
   Hit:2 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates InRelease
   Hit:3 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-backports InRelease
   Hit:4 https://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-security InRelease
   Ign:5 https://download.docker.com/linux/ubuntu focal InRelease
   Get:6 https://download.docker.com/linux/ubuntu bionic InRelease [64.4 kB]
   Err:7 https://download.docker.com/linux/ubuntu focal Release
     404  Not Found [IP: 13.224.166.20 443]
   Get:8 https://download.docker.com/linux/ubuntu bionic/stable amd64 Packages [11.0 kB]
   Reading package lists... Done
   E: The repository 'https://download.docker.com/linux/ubuntu focal 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.
   

   解決方法：刪除 /etc/apt/source.list 

   https://download.docker.com/linux/ubuntu focal Release