diff --git a/dockerdata/start.sh b/dockerdata/start.sh
index b669222..7191f70 100644
--- a/dockerdata/start.sh
+++ b/dockerdata/start.sh
@@ -1,4 +1,6 @@
 #!/bin/sh
-rm -rf migrations
-flask db init && flask db migrate && flask db upgrade && flask admin init
+while ! flask db init ; do
+  sleep 5 ;
+done ;
+flask db migrate && flask db upgrade && flask admin init
 exec gunicorn -c gunicorn.conf.py "applications:create_app()"
\ No newline at end of file