Drupal 8 - Dev environment

development.services.yml

# Local development services.
# /drupal8/sites/development.services.yml
services:
  cache.backend.null:
    class: Drupal\Core\Cache\NullBackendFactory
parameters:
  twig.config:
    debug: true
    auto_reload: true
    cache: false

settings.local.php

<?php

/**
 * @file
 * Local development override configuration feature.
 * /drupal8/sites/default/settings.local.php
 */

assert_options(ASSERT_ACTIVE, TRUE);
\Drupal\Component\Assertion\Handle::register();
$settings['container_yamls'][] = DRUPAL_ROOT . '/sites/development.services.yml';
$config['system.logging']['error_level'] = 'verbose';
$config['system.performance']['css']['preprocess'] = FALSE;
$config['system.performance']['js']['preprocess'] = FALSE;
$settings['cache']['bins']['render'] = 'cache.backend.null';
$settings['cache']['bins']['dynamic_page_cache'] = 'cache.backend.null';
$settings['extension_discovery_scan_tests'] = TRUE;
$settings['rebuild_access'] = TRUE;
$settings['skip_permissions_hardening'] = TRUE;

settings.php

<?php

/**
 * @file
 * Local development override configuration feature.
 * /drupal8/sites/default/settings.php
 */

########## (...) ##########

if (file_exists(__DIR__ . '/settings.local.php')) {
   include __DIR__ . '/settings.local.php';
}

########## (...) ##########