Dockerfile COPY --from Error: 'registry' Build Stage Missing '/build/' Directory

This Dockerfile is attempting to copy files from a previous build stage using the 'COPY --from' syntax. However, it seems that the build stage with the tag 'registry' does not have a '/build/' directory or any files within it. This is causing the build to fail as it cannot calculate the cache key for this step. The issue needs to be resolved by ensuring that the 'registry' build stage has the necessary files in the '/build/' directory before attempting to copy them over.