Finally, the first working container for WooCommerce

- Use the apache image and install wordpress manually
- Optionally connect to a mysql container or install mysql directly inside the WooCommerce container (default user/password: wordpress/wordpress)
- Add script to install WooCommerce, and also to setup an Apache virtual host (.test TLD), using sudo
- Container uses supervisord to run apache and mysql in the same container and make sure both keep running