Update Dockerfile

Dockerfile

@@ -16,13 +16,13 @@ RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 # Copy project including `backend_app` directory
 COPY . /code/
 
-# Expose the API port
-EXPOSE 5000
+# Expose the API port (Hugging Face Spaces defaults to 7860)
+EXPOSE 7860
 
-# Add /code/backend to PYTHONPATH to ensure backend_app can be imported
-# whether building from root or backend directory
-ENV PYTHONPATH="${PYTHONPATH}:/code/backend"
+# Add both /code and /code/backend to PYTHONPATH to ensure backend_app can be imported
+# regardless of whether the build context was root or the backend folder.
+ENV PYTHONPATH="/code:/code/backend:$PYTHONPATH"
 
-# Command to run the application using uvicorn correctly
-# This runs from /code, so references use 'backend_app.main:app'
-CMD ["uvicorn", "backend_app.main:app", "--host", "0.0.0.0", "--port", "5000"]
+# Command to run the application using uvicorn.
+# We use 'sh -c' to inspect the directory structure before starting, which helps debug 'ModuleNotFoundError'.
+CMD ["sh", "-c", "ls -R /code && uvicorn backend_app.main:app --host 0.0.0.0 --port 7860"]