diff --git a/README.md b/README.md
index ae2af93..8514b39 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,9 @@
 - change the values in `.env` and `.env_db`
   you can use `mix phx.gen.secret` to generate secrets.
   update the PHX_HOST to your domain name.
+- if you don't want to pull the pre-built container
+  - uncomment the part to build the image in the `docker-compose.yaml` file
+  - comment the image part to avoid pulling.
 - run `docker compose up -d`
 - run migrations `docker exec -it dbi bin/migrate`
 - open the url (`PHX_HOST`) in a browser.