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

---------

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

e2e-tests/.ci/server.cloud_init.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+set -e -u -o pipefail
+cd "$(dirname "$0")"
+. .e2erc
+
+if [ "$SERVER" != "cloud" ]; then
+  mme2e_log "Skipping cloud instance initialization: operation supported only for cloud server, but running with SERVER='$SERVER'"
+  exit 0
+fi
+
+mme2e_log "Initializing cloud tests"
+
+# Assert that required variables are set
+MME2E_ENVCHECK_MSG="variable required for initializing cloud tests, but is empty or unset."
+: "${CWS_URL:?$MME2E_ENVCHECK_MSG}"
+: "${MM_LICENSE:?$MME2E_ENVCHECK_MSG}"
+
+response=$(curl -X POST "${CWS_URL}/api/v1/internal/tests/create-customer?sku=cloud-enterprise&is_paid=true")
+MM_CUSTOMER_ID=$(echo "$response" | jq -r .customer_id)
+MM_CLOUD_API_KEY=$(echo "$response" | jq -r .api_key)
+MM_CLOUD_INSTALLATION_ID=$(echo "$response" | jq -r .installation_id)
+
+export MM_CUSTOMER_ID=$MM_CUSTOMER_ID
+export MM_CLOUD_API_KEY=$MM_CLOUD_API_KEY
+export MM_CLOUD_INSTALLATION_ID=$MM_CLOUD_INSTALLATION_ID
+export MM_CLOUDSETTINGS_CWSURL=$CWS_URL
+export MM_CLOUDSETTINGS_CWSAPIURL=$CWS_URL
+
+mme2e_generate_envfile_from_var_names >.env.cloud <<EOF
+MM_CLOUDSETTINGS_CWSURL
+MM_CLOUDSETTINGS_CWSAPIURL
+MM_CLOUD_API_KEY
+MM_CUSTOMER_ID
+MM_CLOUD_INSTALLATION_ID
+EOF
+
+mme2e_log "Test cloud customer created, MM_CUSTOMER_ID: $MM_CUSTOMER_ID."