fix(ml): applique les corrections de la review MLflow (securite, documentation, robustesse)

ml/docker-compose.mlflow.yml

@@ -1,6 +1,6 @@
 services:
   mlflow-db:
-    image: postgres:16
+    image: postgres:17
     environment:
       POSTGRES_USER: mlflow
       POSTGRES_PASSWORD: ${MLFLOW_DB_PASSWORD:?definir MLFLOW_DB_PASSWORD dans ml/.env}
@@ -18,7 +18,7 @@ services:
       mlflow-db:
         condition: service_healthy
     ports:
-      - "5000:5000"
+      - "127.0.0.1:5000:5000"
     volumes:
       - mlflow-artifacts:/mlartifacts
     command: >