my ideal config file

wp-config.php

<?php
/**
 * The base configurations of the WordPress.
 *
 * This file has the following configurations: MySQL settings, Table Prefix,
 * Secret Keys, WordPress Language, and ABSPATH. You can find more information
 * by visiting {@link http://codex.wordpress.org/Editing_wp-config.php Editing
 * wp-config.php} Codex page. You can get the MySQL settings from your web host.
 *
 * This file is used by the wp-config.php creation script during the
 * installation. You don't have to use the web site, you can just copy this file
 * to "wp-config.php" and fill in the values.
 *
 * @package WordPress
 */

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', 'your_db_name');

/** MySQL database username */
define('DB_USER', 'your_user_name');

/** MySQL database password */
define('DB_PASSWORD', 'your_password');

/** MySQL hostname */
define('DB_HOST', 'your_host_name');

/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8');

/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', '');

//you may find HTTP_HOST to be more appropriate here, for my local purposes this works fine
//you can also just manually enter the server name like, "localhost:8888"
$env = $_SERVER['SERVER_NAME'];
$domain = 'MySite/';
$local_url = 'http://' . $env . '/' . $domain;

define('WP_HOME', $local_url);
define('WP_SITEURL', $local_url);


/**#@+
 * Authentication Unique Keys and Salts.
 *
 * Change these to different unique phrases!
 * You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service}
 * You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
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');

/**#@-*/

/**
 * WordPress Database Table prefix.
 *
 * You can have multiple installations in one database if you give each a unique
 * prefix. Only numbers, letters, and underscores please!
 */
$table_prefix  = 'wp_';

/**
 * For developers: WordPress debugging mode.
 *
 * Change this to true to enable the display of notices during development.
 * It is strongly recommended that plugin and theme developers use WP_DEBUG
 * in their development environments.
 */
define('WP_DEBUG', false);

/* That's all, stop editing! Happy blogging. */

/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
	define('ABSPATH', dirname(__FILE__) . '/');

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');


/**
 * Here's where the fun begins!
 * This uses the wp_get_attachment_url filter to change the url of images throughout your site.
 * Incredibly useful for local dev when live images are on a production server
 **/
function filter_image_url($url){
	global $wpdb;
	// This works if you HAVE NOT manually changed the siteurl in your database.
	// Instead of doing any of this you could run the typical search/replace but this lets you import a production DB and start rolling.
	$siteurl = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl' LIMIT 1" ) );
	$siteurl = $siteurl->option_value . '/';
	// remember, we defined WP_SITEURL in the beginning of this file
	$url = str_replace(WP_SITEURL, $siteurl, $url);
	// if you'd rather hardcode the line above then use the next line of commented code (and delete/comment out the lines above this going all the way back to the opening of the function):
	// $url = str_replace('http://mylocalurl/site', 'http://www.productionurl.com', $url);
	return $url;
}	
add_filter('wp_get_attachment_url', 'filter_image_url');