Stop ignoring .dockerignore files during evaluator uploads

[benjibc]

Summary

• remove .dockerignore patterns from the evaluator upload archive so all files are sent prior to build-time ignores
• add a regression test confirming dockerignored files remain in the upload tarball

Testing

• pre-commit run --files eval_protocol/evaluation.py tests/test_ep_upload_e2e.py
• pytest tests/test_ep_upload_e2e.py::test_create_tar_includes_dockerignored_files (fails: ModuleNotFoundError: No module named 'litellm')

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Codex Task

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Note

Behavior change

• Packaging now respects only .gitignore; .dockerignore patterns are no longer applied when creating evaluator upload archives (_create_tar_gz_with_ignores).

Tests

• Add test_create_tar_includes_dockerignored_files to confirm files listed in .dockerignore (e.g., Dockerfile, dirs) are still included in the tarball.
• Minor test adjustments (import tarfile).

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[dphuang2]

good change, we should never have been using dockerignore for filtering uploaded files