Tags: jruby/jruby-ci-build
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Basic action for fetching or building jruby-head This is used within JRuby's GHA builds, to reuse the common build artifacts most jobs use. The action will attempt to download a cached build for this hash, and failing that it will do a full build and upload the result. This means jobs that start immediately will all try to be the first to build and upload, but none will be blocked on some other job building and uploading first.