Update Dockerfile

Dockerfile

@@ -12,6 +12,7 @@ RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 # Make a directory for Sentence Transformers cache and make it writable
 RUN mkdir -p /app/sentence_transformers_cache && chmod -R 777 /app/sentence_transformers_cache
 
+ARG TRANSFORMERS_CACHE=/app/sentence_transformers_cache
 
 COPY ./requirements.txt /code/requirements.txt