diff --git a/2.5/Dockerfile b/2.5/Dockerfile
index 137c191..b8917b6 100644
--- a/2.5/Dockerfile
+++ b/2.5/Dockerfile
@@ -5,6 +5,8 @@ LABEL version="2.5"
 LABEL description="OCS (Open Computers and Software Inventory Next Generation)"
 
 ARG APT_FLAGS="-y --no-install-recommends"
+ARG OCS_DBSERVER_READ_PORT
+ARG OCS_DBSERVER_WRITE_PORT
 
 VOLUME /var/lib/mysql