for jessie

It seems jessie is now removed from the main debian mirrors:

W: Failed to fetch http://security.debian.org/debian-security/dists/jessie/updates/main/binary-amd64/Packages  404  Not Found [IP: 2a04:4e42:600::644 80]

W: Failed to fetch http://deb.debian.org/debian/dists/jessie/main/binary-amd64/Packages  404  Not Found [IP: 2a04:4e42:3a::644 80]

W: Failed to fetch http://deb.debian.org/debian/dists/jessie-updates/main/binary-amd64/Packages  404  Not Found [IP: 2a04:4e42:3a::644 80]

Until #40102 (closed) is done, we can use http://archive.debian.org/debian-archive/.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information