This appears to be a result of a combination of a bug in our handling of Docker tags and what appears to be an issue with the current build of the master branch in Docker containers. The tagging bug should be fixed before the end of the day today (with the v1.28 stable images being properly rebuilt base don the correct version in the process). The issue with the latest master is being looked into right now.
The issue with the image tagging has been fixed (so only the latest tag should update with tonight’s nightly build).
We’re still working on diagnosing the issues with the latest build itself, and are in the process of restoring the v1.28.0 and stable tags to the correct images.
I’ll report back with further updates when there’s something new to report.