When running the command "RUN sed -i 's/http://deb.debian.org/http://mirrors.ustc.edu.cn/g' /etc/apt/sources.list" in the Dockerfile, if you encounter the error "/etc/apt/sources.list: No such file or directory," change "/etc/apt/sources.list" to "/etc/apt/sources.list.d/debian.sources."

For programmers in mainland China.