CLD-5835 - Do not use the mattermost-build-webapp image from ECR (#23748)

* Only use mattermostdevelopment images
* Fix docker mirroring workflow
* Reenable insights feature for E2E tests

e2e-tests/.ci/dashboard.override.yml

@@ -3,7 +3,7 @@ version: '3.1'
 
 services:
     dashboard:
-        image: node:16.17.0
+        image: mattermostdevelopment/mirrored-node:16.17.0
         environment:
           PG_URI: postgres://mmuser:mostest@db:5432/automation_dashboard_db
           JWT_SECRET: s8gGBA3ujKRohSw1L8HLOY7Jjnu2ZYv8 # Generated with e.g. `dd if=/dev/urandom count=24 bs=1 2>/dev/null | base64 -w0`

e2e-tests/.ci/server.override.yml

@@ -27,6 +27,7 @@ services:
       MM_SERVICESETTINGS_ENABLEONBOARDINGFLOW: "false"
       MM_FEATUREFLAGS_ONBOARDINGTOURTIPS: "false"
       MM_SERVICEENVIRONMENT: "test"
+      MM_FEATUREFLAGS_INSIGHTSENABLED: "true"
     volumes:
     - "server-config:/mattermost/config"
     ports:
@@ -54,7 +55,7 @@ services:
         condition: service_healthy
 
   webhook-interactions:
-    image:  public.ecr.aws/q3m3k0p4/mattermost-build-webapp:20220802_node-16.10.0
+    image:  mattermostdevelopment/mirrored-node:16.10.0
     command: sh -c "npm install -g axios express client-oauth2@larkox/js-client-oauth2#e24e2eb5dfcbbbb3a59d095e831dbe0012b0ac49 && exec node webhook_serve.js"
     environment:
       NODE_PATH: /usr/local/lib/node_modules/