Fix healthcheck - check webserver response only

Dockerfile

@@ -31,8 +31,8 @@ COPY --chown=www-data:www-data . .
 # Install Composer dependencies (production)
 RUN composer install --no-dev --optimize-autoloader --no-interaction
 
-# Health check
-HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
-    CMD curl -fsS http://localhost/wp/wp-login.php || exit 1
+# Health check - prüft nur ob Webserver antwortet
+HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
+    CMD curl -fsS http://localhost/ -o /dev/null || exit 1
 
 EXPOSE 80