CircleCI: Automatically Deploy WordPress to Elastic Beanstalk

circle.yml

machine:
  <machine_config>
dependencies:
  pre:
    - pip install awsebcli
    - <other_project_dependencies>
database:
  <database_setup>
test:
  <test_config>
deployment:
  production:
    branch: master
    commands:
      - mv wp-config.aws.php wp-config.php
      - zip -r bundle.zip ./* .htaccess .ebextensions
      - eb init --region <region_identifier> <eb_application_name>
      - eb deploy --staged --region <region_identifier> --label CircleCI-Build-${CIRCLE_BUILD_NUM} <eb_environment_name>

config.yml

deploy:
  artifact: bundle.zip

wp-config.aws.php

<?php
/**
 * The base configuration for WordPress
 *
 * The wp-config.php creation script uses this file during the
 * installation. You don't have to use the web site, you can
 * copy this file to "wp-config.php" and fill in the values.
 *
 * This file contains the following configurations:
 *
 * * MySQL settings
 * * Secret keys
 * * Database table prefix
 * * ABSPATH
 *
 * @link https://codex.wordpress.org/Editing_wp-config.php
 *
 * @package WordPress
 */

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

/** MySQL database username */
define('DB_USER', $_SERVER['RDS_USERNAME']);

/** MySQL database password */
define('DB_PASSWORD', $_SERVER['RDS_PASSWORD']);

/** MySQL hostname */
define('DB_HOST', $_SERVER['RDS_HOSTNAME']);

/** 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', '');

... <rest of your WordPress configuration>