Cleanup docker images and test stages

Description

We test too many combinations of JDKs and Rversions and have too many docker images

JDK:
Smoke test on all versions
run JUnits on LTS + latest (currently 8, 11 + 14)

R:
keep only oldest supported + latest 3.x and latest 4.x

 

gpu variants of all images are excesive - eassy fix is to build everythin on CUDA (keep only GPU variants)

Fixed

Assignee

Jan Sterba

Fix versions

None

Reporter

Jan Sterba

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Priority

Major