To get fine-grained caching you need to use cache-mounts, not just cache layers. But the cache export doesn't include cache mounts, therefore the docker github

To get fine-grained caching you need to use cache-mounts, not just cache layers. But the cache export doesn't include cache mounts, therefore the docker github action doesn't export cache mounts to the CI cache. https://github.com/moby/buildkit/issues/1512 https://github.com/moby/buildkit/issues/1512