icebox-exporter restart always

docker-compose.yml

@@ -72,6 +72,7 @@ services:
     - icebox-data:/var/lib/postgresql/data
   icebox-exporter:
     image: registry.chaotikum.net/icebox/prometheus-icebox-exporter
+    restart: always
     environment:
       ICEBOX_URL: http://backend:8081