Update wp cli to 2.0.1

Dockerfile

@@ -15,7 +15,7 @@ ADD wp-config.php.template /app/code/wp-config.php.template
 
 RUN ln -sf /run/wordpress/wp-config.php /app/code/wp-config.php
 
-RUN curl -L -o /app/code/wp https://github.com/wp-cli/wp-cli/releases/download/v1.4.1/wp-cli-1.4.1.phar
+RUN curl -L -o /app/code/wp https://github.com/wp-cli/wp-cli/releases/download/v2.0.1/wp-cli-2.0.1.phar
 RUN chmod +x /app/code/wp
 RUN /bin/echo -e "apache_modules:\n  - mod_rewrite" > /app/code/wp-cli.yml