设置国内镜像源

sudo vim /etc/apt/sources.list.d/ubuntu.sources

Types: deb
#URIs: http://archive.ubuntu.com/ubuntu/
URIs: https://mirrors.tuna.tsinghua.edu.cn/ubuntu/
Suites: noble noble-updates noble-backports
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

## Ubuntu security updates. Aside from URIs and Suites,
## this should mirror your choices in the previous section.
Types: deb
#URIs: http://security.ubuntu.com/ubuntu/
URIs: https://mirrors.tuna.tsinghua.edu.cn/ubuntu/
Suites: noble-security
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg