The issue about Docker LFS

[Juggernaut]

I have set env. in Dockerfile as below:
RUN echo "deb http://mirrors.163.com/debian/ jessie main non-free contrib" > /etc/apt/sources.list.d/jessie.list
RUN echo "deb http://mirrors.163.com/debian/ jessie-backports main non-free contrib" > /etc/apt/sources.list.d/jessie-backports.list
RUN sed -i '/deb http:\/\/mirrors.163.com\/debian\/ jessie-updates main non-free contrib/d' /etc/apt/sources.list

BUT still some issues,DA LAO help:
Step 20/41 : RUN echo "deb http://mirrors.163.com/debian/ jessie main non-free contrib" > /etc/apt/sources.list.d/jessie.list
---> Using cache
---> cb23d5b5c9d1
Step 21/41 : RUN echo "deb http://mirrors.163.com/debian/ jessie-backports main non-free contrib" > /etc/apt/sources.list.d/jessie-backports.list
---> Running in ce1fd7241d87
Removing intermediate container ce1fd7241d87
---> d442be864daf
Step 22/41 : RUN sed -i '/deb http:\/\/mirrors.163.com\/debian\/ jessie-updates main non-free contrib/d' /etc/apt/sources.list
---> Running in c76645f59fc1
Removing intermediate container c76645f59fc1
---> f591c86f5b79
Step 23/41 : RUN apt-get -o Acquire::Check-Valid-Until=false update
---> Running in 3245afd2eacf
Get:1 http://security.debian.org jessie/updates InRelease [44.9 kB]
Ign http://mirrors.163.com jessie-backports InRelease
Ign http://mirrors.163.com jessie InRelease
Ign http://mirrors.163.com jessie-backports Release.gpg
Get:2 http://mirrors.163.com jessie Release.gpg [1652 B]
Ign http://deb.debian.org jessie InRelease
Get:3 http://deb.debian.org jessie-updates InRelease [16.3 kB]
Ign http://mirrors.163.com jessie-backports Release
Get:4 http://mirrors.163.com jessie Release [77.3 kB]
Get:5 http://security.debian.org jessie/updates/main amd64 Packages [951 kB]
Get:6 http://mirrors.163.com jessie/main amd64 Packages [9098 kB]
Get:7 http://deb.debian.org jessie Release.gpg [1652 B]
Get:8 http://deb.debian.org jessie Release [77.3 kB]
Get:9 http://mirrors.163.com jessie/non-free amd64 Packages [101 kB]
Get:10 http://mirrors.163.com jessie/contrib amd64 Packages [59.2 kB]
Err http://mirrors.163.com jessie-backports/main amd64 Packages
404 Not Found
Err http://mirrors.163.com jessie-backports/non-free amd64 Packages
404 Not Found
Err http://mirrors.163.com jessie-backports/contrib amd64 Packages
404 Not Found
Get:11 http://deb.debian.org jessie-updates/main amd64 Packages [20 B]
Get:12 http://deb.debian.org jessie/main amd64 Packages [9098 kB]
Err http://deb.debian.org jessie/main amd64 Packages

Err http://deb.debian.org jessie/main amd64 Packages

Err http://deb.debian.org jessie/main amd64 Packages
Unable to connect to deb.debian.org:http:
WFetched 10.4 MB in 17min 46s (9780 B/s)
: Failed to fetch http://mirrors.163.com/debian/dists/jessie-backports/main/binary-amd64/Packages 404 Not Found

W: Failed to fetch http://mirrors.163.com/debian/dists/jessie-backports/non-free/binary-amd64/Packages 404 Not Found

W: Failed to fetch http://mirrors.163.com/debian/dists/jessie-backports/contrib/binary-amd64/Packages 404 Not Found

W: Failed to fetch http://deb.debian.org/debian/dists/jessie/main/binary-amd64/Packages Unable to connect to deb.debian.org:http:

E: Some index files failed to download. They have been ignored, or old ones used instead.
The command '/bin/sh -c apt-get -o Acquire::Check-Valid-Until=false update' returned a non-zero code: 100