Update Dockerfile

Dockerfile

@@ -8,7 +8,7 @@ RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
 COPY ./__init__.py /code/__init__.py
 COPY ./credentials.env /code/credentials.env
-COPY ./rag_retriver.py /code/rag_retriver.py
+COPY ./rag_retriever.py /code/rag_retriever.py
 COPY ./main.py /code/main.py
 
 CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]