Updated github action

Author: martinyde

.github/workflows/pr.yaml

@@ -49,6 +49,26 @@ jobs:
           composer normalize composer.json --dry-run
           composer audit
 
+config-check:
+  name: Check that config is up to date
+  runs-on: ubuntu-latest
+  steps:
+    - uses: actions/checkout@master
+
+    - name: Install site
+      run: |
+        docker network create frontend
+        docker compose pull
+        docker compose up --detach
+        # Important: Use --no-interaction to make https://getcomposer.org/doc/06-config.md#discard-changes have effect.
+        docker compose exec --user root phpfpm composer install --no-interaction
+        # Install the site
+        docker compose exec --user root phpfpm vendor/bin/drush site:install --existing-config --yes
+    - name: Export config
+      run: docker compose exec --user root phpfpm vendor/bin/drush config:export --yes
+    - name: Check for changes in config
+      run: git diff --diff-filter=ACMRT --exit-code config/
+
   phpcs:
     name: PHP - Check Coding Standards
     runs-on: ubuntu-latest