FOSDEM is coming, and it is time to remove this antifeature [0]. I can make the PR to fix the build. If you agree, then I'll make it. (If it is not the right place to discuss about this, please let me know where, thanks) [0]: https://www.fsf.org/bulletin/2007/fall/antifeatures/
These (soft) limits are suitable for developers and home users who we target with that docker image. As we say in the warning message, we'd like to avoid the impression that this unsupported version is suitable for deployment in enterprises.