Some index files failed to download during build

[jack-rory-staunton]

On Mac OS 10.15.4, after cloning the repo and navigating to it (I left the env file untouched), I am unable to build:

| => docker build -t convert-robot .
Sending build context to Docker daemon 866.8kB
Step 1/6 : FROM telemark/docker-node-unoconv:10.14.0
---> c24fa485fa28
Step 2/6 : RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y make gcc g++ python && apt-get clean
---> Running in eb3f9c41ae1e
Ign http://deb.debian.org jessie InRelease
Get:1 http://security.debian.org jessie/updates InRelease [44.9 kB]
Get:2 http://deb.debian.org jessie-updates InRelease [16.3 kB]
Ign http://deb.debian.org jessie-backports InRelease
Get:3 http://deb.debian.org jessie Release.gpg [1652 B]
Ign http://deb.debian.org jessie-backports Release.gpg
Get:4 http://deb.debian.org jessie Release [77.3 kB]
Ign http://deb.debian.org jessie-backports Release
Err http://deb.debian.org jessie-backports/main amd64 Packages

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

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

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

Err http://deb.debian.org jessie-backports/main amd64 Packages
404 Not Found
Get:5 http://deb.debian.org jessie-updates/main amd64 Packages [20 B]
Get:6 http://security.debian.org jessie/updates/main amd64 Packages [976 kB]
Get:7 http://deb.debian.org jessie/main amd64 Packages [9098 kB]
Fetched 10.2 MB in 8s (1263 kB/s)
W: Failed to fetch http://deb.debian.org/debian/dists/jessie-backports/main/binary-amd64/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.
The command '/bin/sh -c apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y make gcc g++ python && apt-get clean' returned a non-zero code: 100

I'm not experienced with Docker so any help is appreciated in understanding this problem. Thanks.

[zrrrzzt]

Hmmm, this have not been touched in a while. I did some updates and the latest version should build just fine.

Be aware: This robot does probably not do what you think it does :-)

Take a look in the /test/directories/copies to see an example of the files this modules is created for.