`i386/ubuntu` `latest` tag outdated

[JackPGreen]

The image documentation says:

The i386/ubuntu:latest tag points to the "latest LTS", since that's the version recommended for general use.

The latest tag is 18.04.4 (2020):

docker run --rm i386/ubuntu:latest bash -c "cat /etc/*release | grep VERSION="
VERSION="18.04.4 LTS (Bionic Beaver)"

But if you try 18.04 tag, it's 18.04.6 (2023):

docker run --rm i386/ubuntu:18.04 bash -c "cat /etc/*release | grep VERSION="
VERSION="18.04.6 LTS (Bionic Beaver)"

I'm not suggesting the i386 build should point to the latest LTS (24), but I think it they should be in sync.

[yosifkit]

What happened is that a newer latest was added (like 20.04) that didn't support i386, so the i386/ubuntu:latest tag was no longer updated but 18.04 was still updated until its end of life. The Docker Hub documentation for a specific architecture (https://hub.docker.com/r/i386/ubuntu) is mostly just a copy of the main documentation (https://hub.docker.com/_/ubuntu), so in this case, is not correctly applicable if an architecture is dropped completely.

Note that https://hub.docker.com/_/ubuntu no longer has any actively supported images with i386, so everything in i386/ubuntu is no longer updated.

[tianon]

Yeah, the important bit is this at the top:

Supported tags and respective Dockerfile links

WARNING: THIS IMAGE IS NOT SUPPORTED ON THE i386 ARCHITECTURE