Add optimize:clear before cache rebuild in entrypoint to prevent stale cache

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker/entrypoint.sh

@@ -30,7 +30,8 @@ echo "==> Storage-Symlink anlegen..."
 rm -rf public/storage
 ln -sf ../storage/app/public public/storage
 
-echo "==> Cache für Produktion bauen..."
+echo "==> Cache leeren und neu bauen..."
+php artisan optimize:clear
 php artisan config:cache
 php artisan route:cache
 php artisan view:cache