README: explain changes

README.md

@@ -3,4 +3,23 @@ Odoo docker image
 This repo is a replica of the [original odoo docker repo](https://github.com/odoo/docker) but it has the env variables modified so
 that the app can run on top of kubernetes.
 
-`docker pull cloudflavor/
+`docker pull cloudflavor/odoo-docker:latest`
+
+Changes:
+
+Commented out
+```
+#: ${HOST:=${DB_PORT_5432_TCP_ADDR:='db'}}
+#: ${PORT:=${DB_PORT_5432_TCP_PORT:=5432}}
+#: ${USER:=${DB_ENV_POSTGRES_USER:=${POSTGRES_USER:='odoo'}}}
+#: ${PASSWORD:=${DB_ENV_POSTGRES_PASSWORD:=${POSTGRES_PASSWORD:='odoo'}}}
+
+```
+
+And pointed Env vars to ones generated.
+```
+check_config "db_host" "$ODOO_DB_SERVICE_HOST"
+check_config "db_port" "$ODOO_DB_SERVICE_PORT"
+check_config "db_user" "$USER"
+check_config "db_password" "$PASSWORD"
+```