Update README.md
diff --git a/README.md b/README.md
index 08fb730..88d49de 100644
--- a/README.md
+++ b/README.md
@@ -1727,7 +1727,17 @@
...
docker logs <container_id> – to get log for particular Docker container.
```
-To change Docker images on existing environment, execute following steps:
+
+To change Docker images on existing environment, you can run script on SSN node that rebuilds docker images with the command:
+```
+docker-build all #to rebuild all images
+```
+or
+```
+docker-build <notebook_name> #to rebuild certain images
+```
+
+You can also rebuild images manually by executing the following steps:
1. SSH to SSN instance
2. go to */opt/dlab/sources/*
