Fix entrypoint script paths and working directory

Dockerfile

@@ -140,6 +140,7 @@ which python\n\
 python --version\n\
 \n\
 # Run the app\n\
+cd /home/user/app\n\
 python scripts/gradio/app_gradio_space.py\n' > $HOME/app/scripts/gradio/entrypoint.sh
 
 # Make the script executable
@@ -159,5 +160,6 @@ RUN echo "=== Final directory structure ===" && \
 
 EXPOSE 7860
 
-WORKDIR $HOME/app/scripts/gradio
-CMD ["./entrypoint.sh"]
+# Set working directory to app root
+WORKDIR $HOME/app
+CMD ["./scripts/gradio/entrypoint.sh"]