refactor(docker): ♻️ Simplify volume mounts in docker-compose

Refactor volume mounts for easier development.

- Reduce redundant volume declarations.
- Mount entire project directory.
- Improve development workflow.

docker-compose.dev.yml

@@ -29,9 +29,7 @@ services:
       - "80:80"
       - "443:443"
     volumes:
-      - ./web/modules/custom:/opt/drupal/web/modules/custom
-      - ./web/themes/custom:/opt/drupal/web/themes/custom
-      - ./web/sites:/opt/drupal/web/sites
+      - .:/opt/drupal
       - /app/public/modules
       - /app/public/profiles
       - /app/public/themes