diff --git a/Dockerfile b/Dockerfile
index aa1cfe9..7e37b25 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,9 +12,10 @@ ENV PHP_MEMORY_LIMIT=512M
 ENV PHP_UPLOAD_MAX_FILESIZE=64M
 ENV PHP_POST_MAX_SIZE=64M
 
-# Install WP-CLI (als root)
+# Install MySQL extensions + WP-CLI (als root)
 USER root
-RUN curl -o /usr/local/bin/wp https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar \
+RUN install-php-extensions mysqli pdo_mysql \
+    && curl -o /usr/local/bin/wp https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar \
     && chmod +x /usr/local/bin/wp
 
 # Startup-Script in /etc/entrypoint.d/ (serversideup Standard)