# Set the environment variable in your Dockerfile ENV NLTK_DATA=/usr/local/share/nltk_data Use code with caution. python - Docker NLTK Download - Stack Overflow
To ensure your application is stable and portable, you must pre-download NLTK data into your Docker image during the build process. nltk download docker
NLTK searches a set list of standard paths for its data (e.g., /usr/share/nltk_data , /usr/local/share/nltk_data , or ~/nltk_data ). If you download your data to a non-standard location, you set the NLTK_DATA environment variable so the library can find it at runtime. dockerfile # Set the environment variable in your Dockerfile