Update Dockerfile

Dockerfile

@@ -54,7 +54,7 @@ RUN pip3 install --no-cache-dir --user -r requirements.txt
 COPY --chown=user . $HOME/app
 
 # Example: Use secret API_KEY for a command
-RUN --mount=type=secret,id=API_KEY,mode=0444,required=true \
+RUN --mount=type=secret,id=OPENAI_API_KEY,mode=0444,required=true \
 
 # Make port 7860 available to the world outside this container
 EXPOSE 7860