Caching
Does caching work inside a container job?
Quick answer
Yes, but paths inside the container differ from paths on the host, so cache keys must reference container paths.
The detail that matters
This mismatch is the most common reason a container job appears to cache and never actually hits.
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Related
Why does Cargo rebuild everything?Your cache key changes on every run, or target/ is not cached at all.Why is cache restore slow?GitHub throttles cache bandwidth, so a multi-gigabyte cache can take minutes to restore.How do I write a good cache key?Hash exactly the files that determine the cached content — usually the lockfile — and nothing else.What are restore-keys?Ordered prefixes tried when the exact cache key misses, so a partial match can still be restored.