Docker Buildx
Docker Buildx found a reserved stage name in the Dockerfile
ReservedStageName
Docker Buildx build checks found a stage alias that uses a reserved word and should not be used as a stage name.
Error AtlasError Documentation and ResolutionObserved message
ReservedStageName
Why it happens
- A Dockerfile stage alias uses a reserved name.
- A copied or generated Dockerfile introduced a stage name that collides with reserved terms.
- Build checks are enforcing Dockerfile naming rules for stage aliases.
How to fix it
- Rename the stage alias to a non-reserved, descriptive name.
- Update COPY --from and other stage references after the rename.
- Re-run build checks to confirm the stage-name rule passes.
Official reference
Docker Docs: Build checksRelated errors
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