7. Defina o diretório de trabalho atual como `/code`.

8. Copie o arquivo `requirements.txt` para o diretório `/code`.

    Essse arquivo só existe no estágio anterior do Docker, é por isso que usamos `--from-requirements-stage` para copiá-lo.

9. Instale as dependências de pacote do arquivo `requirements.txt` gerado.

10. Copie o diretório `app` para o diretório `/code`.

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