build: Download the 'stopwords' resource before running the app

Dockerfile

@@ -15,5 +15,8 @@ RUN --mount=type=cache,mode=0755,target=/root/.cache/pip pip install -r requirem
 # Make port 8000 available to the world outside this container
 EXPOSE 8000
 
+# Download the 'stopwords' resource before running the app
+RUN python -c "import nltk; nltk.download('stopwords')"
+
 # Run app.py when the container launches
 CMD ["python", "main.py"]