diff --git a/geonetwork/variant-postgres.md b/geonetwork/variant-postgres.md
index e84e36820..5b0f5b683 100644
--- a/geonetwork/variant-postgres.md
+++ b/geonetwork/variant-postgres.md
@@ -10,15 +10,16 @@ If your postgres instance is listening on a non-standard port, you must also set
 
 ### Connecting to a postgres database
 
-If you want to connect to a postgres server, you need to pass an extra environment variable, containing the IP address for this server (which could be localhost, if you are running it locally). - `POSTGRES_DB_HOST`: IP address of your database server
+If you want to connect to a postgres server, you need to pass an extra environment variable, `POSTGRES_DB_HOST`,
+containing the address of this server.
 
-For instance, if the server is running on `192.168.1.10`, on port `5434`, the username is `postgres` and the password is `mysecretpassword`:
+If you want to connect to an **external database server**, you can use either the IP address or the DNS as `POSTGRES_DB_HOST`. For instance, if the server is running on `mydns.net`, on port `5434`, the username is `postgres` and the password is `mysecretpassword`:
 
 ```console
-$ docker run --name geonetwork -d -p 8080:8080 -e POSTGRES_DB_HOST=192.168.1.10 -e POSTGRES_DB_PORT=5434 -e POSTGRES_DB_USERNAME=postgres -e POSTGRES_DB_PASSWORD=mysecretpassword geonetwork:postgres
+$ docker run --name geonetwork -d -p 8080:8080 -e POSTGRES_DB_HOST=mydns.net -e POSTGRES_DB_PORT=5434 -e POSTGRES_DB_USERNAME=postgres -e POSTGRES_DB_PASSWORD=mysecretpassword geonetwork:postgres
 ```
 
-If you want to use the container name as `POSTGRES_DB_HOST`, just make sure that containers can discover each other, by **running them in the same user-defined network**. For instance, you can create a bridge network:
+If are want to **run postgres on a container**, you can use the container name as `POSTGRES_DB_HOST`: just make sure that containers can discover each other, by **running them in the same user-defined network**. For instance, you can create a bridge network:
 
 ```console
 $ docker network create --driver bridge mynet