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Allow Logstash 7.17.x images to be pushed to dockerhub
Currently dockerhub is rejecting Logstash 7.17.x images since they're based on Ubuntu 20.04, a no longer supprted OS.
Logstash can't be upgraded to Ubuntu 22+ easily due to a glibc upgrade which breaks the also very old JRuby 9.2.
Possible alternatives:
- Explore a way to hack a new dll/so that works with the new glibc into the old JRuby
- See if there's another base image we can upgrade to
- ??
Related:
- https://github.com/elastic/logstash/pull/15398
- https://github.com/elastic/logstash/pull/17735#issuecomment-3008282052