Remove built-in and use official docker-optimized wp-config.php instead

Dockerfile

@@ -1,8 +1,10 @@
 ARG PHP_VERSION=8.1
 ARG WP_VERSION=6.1.0
 
-# WP CLI
+# WordPress resources
 FROM --platform=${TARGETPLATFORM} wordpress:cli-php${PHP_VERSION} AS wp-cli
+FROM --platform=${TARGETPLATFORM} wordpress:${WP_VERSION}-php${PHP_VERSION}-fpm-alpine AS wp-src
+
 
 
 # Build rootfs
@@ -16,7 +18,10 @@ COPY ["./rootfs/", "/"]
 
 # Configuration and patches
 ARG WP_VERSION
-COPY ["wp-config.php",                                    "/var/www/html/"]
+
+# Copy docker-optimized wp-config from official image
+COPY --from=wp-src ["/usr/src/wordpress/wp-config-docker.php", "/var/www/html/wp-config.php"]
+
 COPY ["patches/${WP_VERSION}/wp-admin-update-core.patch", "/etc/wp-mods/"]
 
 

wp-config.php

@@ -1,113 +0,0 @@
-<?php
-/**
- * The base configuration for WordPress
- * Adapted for docker environment
- * @author Aleksandar Puharic <xzero@elite7hackers.net>
- *
- * 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
- */
-
-/** Not needed behind the nginx-proxy */
-define('FORCE_SSL_ADMIN', false);
-define('FORCE_SSL_LOGIN', false);
-
-/** Disable cron (will be run by system crond) */
-define('DISABLE_WP_CRON', true);
-
-/** Makes it easier to control in docker environment */
-define('WP_CONTENT_DIR', $_ENV['WORDPRESS_CONTENT_DIR'] ?? (__DIR__ . '/wp-content'));
-
-/**
- * Redis Cache
- */
-define('WP_REDIS_HOST', $_ENV['WORDPRESS_REDIS_HOST'] ?? null);
-define('WP_CACHE', (bool)($_ENV['WORDPRESS_CACHE'] ?? false));
-define('WP_CACHE_KEY_SALT', $_ENV['WORDPRESS_CACHE_KEY_SALT'] ?? null);
-
-// ** MySQL settings - You can get this info from your web host ** //
-/** The name of the database for WordPress */
-define('DB_NAME',     $_ENV['WORDPRESS_DB_NAME'] ?? 'wordpress');
-
-/** MySQL database username */
-define('DB_USER',     $_ENV['WORDPRESS_DB_USER'] ?? 'wordpress');
-
-/** MySQL database password */
-define('DB_PASSWORD', $_ENV['WORDPRESS_DB_PASSWORD'] ?? '');
-
-/** MySQL hostname */
-define('DB_HOST',     $_ENV['WORDPRESS_DB_HOST'] ?? 'localhost');
-
-/** Database Charset to use in creating database tables. */
-define('DB_CHARSET',  $_ENV['WORDPRESS_DB_CHARSET'] ?? 'utf8mb4');
-
-/** The Database Collate type. Don't change this if in doubt. */
-define('DB_COLLATE',  $_ENV['WORDPRESS_DB_COLLATION'] ?? '');
-
-/**#@+
- * 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',         $_ENV['WORDPRESS_AUTH_KEY'] ?? '');
-define('SECURE_AUTH_KEY',  $_ENV['WORDPRESS_SECURE_AUTH_KEY'] ?? '');
-define('LOGGED_IN_KEY',    $_ENV['WORDPRESS_LOGGED_IN_KEY'] ?? '');
-define('NONCE_KEY',        $_ENV['WORDPRESS_NONCE_KEY'] ?? '');
-define('AUTH_SALT',        $_ENV['WORDPRESS_AUTH_SALT'] ?? '');
-define('SECURE_AUTH_SALT', $_ENV['WORDPRESS_SECURE_AUTH_SALT'] ?? '');
-define('LOGGED_IN_SALT',   $_ENV['WORDPRESS_LOGGED_IN_SALT'] ?? '');
-define('NONCE_SALT',       $_ENV['WORDPRESS_NONCE_SALT'] ?? '');
-
-/**#@-*/
-
-/**
- * WordPress Database Table prefix.
- *
- * You can have multiple installations in one database if you give each
- * a unique prefix. Only numbers, letters, and underscores please!
- */
-$table_prefix  = $_ENV['WORDPRESS_TABLE_PREFIX'] ?? 'wp_';
-
-/**
- * For developers: WordPress debugging mode.
- *
- * Change this to true to enable the display of notices during development.
- * It is strongly recommended that plugin and theme developers use WP_DEBUG
- * in their development environments.
- *
- * For information on other constants that can be used for debugging,
- * visit the Codex.
- *
- * @link https://codex.wordpress.org/Debugging_in_WordPress
- */
-define('WP_DEBUG', (bool)($_ENV['WORDPRESS_DEBUG'] ?? false));
-
-/**
- * Other settings
- */
-define('FS_METHOD', 'direct');
-
-/* That's all, stop editing! Happy blogging. */
-
-/** Absolute path to the WordPress directory. */
-if ( !defined('ABSPATH') )
-  define('ABSPATH', __DIR__ . '/');
-
-/** Sets up WordPress vars and included files. */
-require_once(ABSPATH . 'wp-settings.php');