add stemm

dockerfile

@@ -14,6 +14,7 @@ ENV PATH="/opt/venv/bin:$PATH"
 WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir requests==2.32.3
+RUN pip install --no-cache-dir stem==1.8.2
 RUN pip install --no-cache-dir --no-build-isolation -r requirements.txt
 
 # ---- Final Stage ----