MM-52642 CLD-6352 MM-54007 Prepare setup for Playwright pipeline (#24647)

* pipeline(playwright): prepare setup for playwright

* feedback address

* clean up readme

* Fix docker-compose command and definition for dashboard

* fix the dashboard

* ignore dashboard when formatting

---------

Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: Mario Vitale <mvitale1989@hotmail.com>

e2e-tests/playwright/README.md

@@ -45,7 +45,7 @@ npm run test
 Change to root directory, run docker container
 
 ```
-docker run -it --rm -v "$(pwd):/mattermost/" --ipc=host mcr.microsoft.com/playwright:v1.38.0-jammy /bin/bash
+docker run -it --rm -v "$(pwd):/mattermost/" --ipc=host mcr.microsoft.com/playwright:v1.38.1-jammy /bin/bash
 ```
 
 #### 2. Inside the docker container