Getting started with Fig and Wordpress

Fig makes it nice and easy to run Wordpress in an isolated environment. Install Fig, then download Wordpress into the current directory:

$ curl | tar -xvzf -

This will create a directory called wordpress, which you can rename to the name of your project if you wish. Inside that directory, we create Dockerfile, a file that defines what environment your app is going to run in:

FROM orchardup/php5
ADD . /code

This instructs Docker on how to build an image that contains PHP and Wordpress. For more information on how to write Dockerfiles, see the Docker user guide and the Dockerfile reference.

Next up, fig.yml starts our web service and a separate MySQL instance:

  build: .
  command: php -S -t /code
    - "8000:8000"
    - db
    - .:/code
  image: orchardup/mysql
    MYSQL_DATABASE: wordpress

Two supporting files are needed to get this working - first up, wp-config.php is the standard Wordpress config file with a single change to point the database configuration at the db container:

define('DB_NAME', 'wordpress');
define('DB_USER', 'root');
define('DB_PASSWORD', '');
define('DB_HOST', "db:3306");
define('DB_CHARSET', 'utf8');
define('DB_COLLATE', '');

define('AUTH_KEY',         'put your unique phrase here');
define('SECURE_AUTH_KEY',  'put your unique phrase here');
define('LOGGED_IN_KEY',    'put your unique phrase here');
define('NONCE_KEY',        'put your unique phrase here');
define('AUTH_SALT',        'put your unique phrase here');
define('SECURE_AUTH_SALT', 'put your unique phrase here');
define('LOGGED_IN_SALT',   'put your unique phrase here');
define('NONCE_SALT',       'put your unique phrase here');

$table_prefix  = 'wp_';
define('WPLANG', '');
define('WP_DEBUG', false);

if ( !defined('ABSPATH') )
    define('ABSPATH', dirname(__FILE__) . '/');

require_once(ABSPATH . 'wp-settings.php');

Finally, router.php tells PHP's built-in web server how to run Wordpress:


$path = '/'.ltrim(parse_url($_SERVER['REQUEST_URI'])['path'],'/');
    if(is_dir($root.$path) && substr($path,strlen($path) - 1, 1) !== '/')
        $path = rtrim($path,'/').'/index.php';
    if(strpos($path,'.php') === false) return false;
    else {
        require_once $root.$path;
}else include_once 'index.php';

With those four files in place, run fig up inside your Wordpress directory and it'll pull and build the images we need, and then start the web and database containers. You'll then be able to visit Wordpress at port 8000 on your docker daemon (if you're using boot2docker, boot2docker ip will tell you its address).