ci: Improve bazel caching#133
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This allows sharing caches even if workflows are called by other workflows via workflow_call
…ssing - Remove OLD_CACHES_JSON environment variable definition - Update repository-cache-check to use new output-based pattern - Update repository-cache-refresh to consume old-caches-json from check step output - Eliminate filesystem dependency for passing cache data between steps This change works with the updated cicd-actions repository which now properly uses GitHub's native input/output variable mechanism instead of file paths.
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At the moment the bazel caches can become huge and outdated at the same time. Thus this changes the cache handling as follows:
MODULE.bazel.lockchanges. Otherwise it will be incomplete and some jobs still need to download stuff from the internet instead of reusing the cache.This requires the presence of a dedicated cache maintenance job. This must at least rebuild the repository cache on
MODULE.bazel.lockchanges. In addition it shall delete the disk caches to ensure their growth is limited and outdated files are removed.