Improve

uui-e2e-tests/readme.md

@@ -17,8 +17,7 @@ podman machine start
 #### Prerequisites
 1. Podman is installed
 2. Start local dev server
-3. Copy the local dev server URL from the console to the ```./.env.local``` file. 
-   The URL will look like ```http://a.b.c.d:3000```
+3. [Optional step] Change ```./.env.local``` file in order to set non-standard UUI_APP_BASE_URL
 
 #### NPM tasks to use
 Note: If you run the tests for the very first time, it will take some time to download necessary docker images (about 8-10min).