1. add update debian
root@debian02:~# cat /etc/apt/sources.list
# deb cdrom:[Debian GNU/Linux 11.6.0 _Bullseye_ - Official amd64 DVD Binary-1 20221217-10:40]/ bullseye contrib main
#deb cdrom:[Debian GNU/Linux 11.6.0 _Bullseye_ - Official amd64 DVD Binary-1 20221217-10:40]/ bullseye contrib main
#deb http://security.debian.org/debian-security bullseye-security main contrib
#deb-src http://security.debian.org/debian-security bullseye-security main contrib
# bullseye-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
# A network mirror was not selected during install. The following entries
# are provided as examples, but you should amend them as appropriate
# for your mirror of choice.
#
# deb http://deb.debian.org/debian/ bullseye-updates main contrib
# deb-src http://deb.debian.org/debian/ bullseye-updates main contrib
deb http://deb.debian.org/debian bullseye main contrib non-free
deb-src http://deb.debian.org/debian bullseye main contrib non-free
deb http://security.debian.org/debian-security bullseye-security main contrib non-free
deb-src http://security.debian.org/debian-security bullseye-security main contrib non-free
deb http://deb.debian.org/debian bullseye-updates main contrib non-free
deb-src http://deb.debian.org/debian bullseye-updates main contrib non-free
root@debian02:~#

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