diff --git a/README.md b/README.md
index 65a8efc8..d2d8fba8 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,9 @@ parameters.
 
 ### Local .env file
 
-Local `.env` file is required to run the application, a basic example of such file contains the following:
+Creating a local `.env` file (see [Docker docs](https://docs.docker.com/compose/env-file/)
+on `.env` files) is necessary for some components in the app to work correctly,
+a basic example of such file contains the following:
 
 ```
 ZOO_DEBUG=1