Fix race condition when setting admin password with POST_DEPLOY_CMDS

abra.sh

@@ -88,6 +88,16 @@ set_admin_pass() {
 password=$(cat /run/secrets/admin_pass)
 token=$(cat /run/secrets/admin_token)
 /manage.py shell -c """
+import time
+i = 0
+while (not User.objects.filter(username='akadmin')):
+    print('Waiting for akadmin to be created...')
+    time.sleep(10)
+    i += 1
+    if i > 6:
+        print('Failed to find admin user!')
+        exit()
+
 akadmin = User.objects.get(username='akadmin')
 akadmin.set_password('$password')
 akadmin.save()