chore/security : migrate chatbot base image to dhi

Author: issam71100

.github/workflows/build-images.yml

@@ -87,6 +87,13 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: Login to Docker Hardened Images
+        uses: docker/login-action@v3
+        with:
+          registry: dhi.io
+          username: ${{ secrets.DHI_USERNAME }}
+          password: ${{ secrets.DHI_PASSWORD }}
+      
       - name: Login to Container Registry
         uses: docker/login-action@v3
         with:

tools/chatbot/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Python runtime as a parent image
-FROM python:3.13-slim
+FROM dhi.io/python:3.14
 
 # Set environment variables
 ENV PYTHONDONTWRITEBYTECODE=1 \