CLD-5699 Preliminary fixes (#25040)

* Rework some of PR24647
* Store MM_LICENSE to .env.server file
* Remove legacy network setup
* Fixes, generate docker-compose and env files in one place
* Simplify templating mechanism for server.yml
* Fix race condition for dashboard start
* Fix websockets for local debugging
* Fix: make webhook-interaction work again
* Simplify and fix dashboard&cloud configuration, formatting fix

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Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/.ci/.gitignore

@@ -1,6 +1,4 @@
 dashboard
-.env
-!.env.cypress
-!.env.server
-!.env.server.cloud
-!.env.dashboard
+server.yml
+env
+.env.*