download nltk files in build step instead of during the start of the …

…application

Dockerfile

@@ -14,6 +14,8 @@ COPY requirements.txt .
 RUN pip install --upgrade pip && \
     pip install --no-cache-dir -r requirements.txt
 
+RUN python -m nltk.downloader averaged_perceptron_tagger punkt
+
 COPY . .
 
 RUN chmod +x ./entrypoint.sh ./wait-for-it.sh ./install_tool_dependencies.sh ./entrypoint_celery.sh
@@ -29,5 +31,6 @@ RUN apt-get update && \
 
 COPY --from=compile-image /opt/venv /opt/venv
 COPY --from=compile-image /app /app
+COPY --from=compile-image /root/nltk_data /root/nltk_data
 
 ENV PATH="/opt/venv/bin:$PATH"