fix(db): mqtt hostname to keep internal config identique in case of rebuild

Signed-off-by: Klagarge <remi@heredero.ch>

db/docker-compose.yml

@@ -64,6 +64,7 @@ services:
   mqtt:
     image: rabbitmq:4-management-alpine
     container_name: mqtt
+    hostname: "mqtt"
     restart: unless-stopped
     ports:
       - "15672:15672" # Management plugin HTTP port