change init container for cockroach

Change-Id: I847a40f5b0c57137514ae6ac3d5f1b8c29ea1cda
diff --git a/docker/swarm/stack/operations_api.yml b/docker/swarm/stack/operations_api.yml
index fff4f18..8d7aef7 100644
--- a/docker/swarm/stack/operations_api.yml
+++ b/docker/swarm/stack/operations_api.yml
@@ -58,7 +58,9 @@
             cockroach-init:
               environment:
                 COCKROACH_HOST: cockroach-ui
-              image: atengler/cockroach
+                DB_NAME: oapi
+                DB_USER: oapi
+              image: atengler/cockroach-init
               deploy:
                 restart_policy:
                   condition: on-failure