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edis0n0 早就试过了.
0% [Working]E: Package 'ufw' has no installation candidate
Ign:1 cdrom://[Debian GNU/Linux 11.5.0 _Bullseye_ - Official amd64 DVD Binary-1 20220910-10:40] bullseye InRelease
Err:2 cdrom://[Debian GNU/Linux 11.5.0 _Bullseye_ - Official amd64 DVD Binary-1 20220910-10:40] bullseye Release
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Hit:3 
https://download.docker.com/linux/debian bullseye InRelease                                                      
Get:4 
http://security.debian.org/debian-security bullseye-security InRelease [48.4 kB]
Get:5 
http://security.debian.org/debian-security bullseye-security/main Sources [166 kB]
Get:6 
http://security.debian.org/debian-security bullseye-security/main amd64 Packages [191 kB]                        
Reading package lists... Done                                                                                          
E: The repository 'cdrom://[Debian GNU/Linux 11.5.0 _Bullseye_ - Official amd64 DVD Binary-1 20220910-10:40] bullseye 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.