Use the continually updated rc image instead.

Author: johnbillion

images/8.5/php/Dockerfile

@@ -1,4 +1,4 @@
-FROM php:8.5.0beta1-fpm
+FROM php:8.5-rc-fpm
 
 WORKDIR /var/www
 

update.php

@@ -141,7 +141,7 @@
 	),
 	'8.5' => array(
 		'php' => array(
-			'base_name'       => 'php:8.5.0beta1-fpm',
+			'base_name'       => 'php:8.5-rc-fpm',
 			'apt'             => array( 'libjpeg-dev', 'libpng-dev', 'libwebp-dev', 'libzip-dev', 'libssl-dev', 'libmemcached-dev', 'unzip', 'libmagickwand-dev', 'ghostscript', 'libonig-dev', 'locales', 'sudo', 'rsync' ),
 			'extensions'      => array( 'gd', 'mysqli', 'zip', 'exif', 'intl', 'mbstring' ),
 			'pecl_extensions' => array(),