redis

apt install redis

redis-cli ping

PONG

redis-cli monitor

OK

redis-cli keys *

edit wp-config.php

define( 'WP_REDIS_HOST', 'redis' );
define( 'WP_REDIS_PORT', 6379 );
define( 'WP_REDIS_TIMEOUT', 1 );
define( 'WP_REDIS_READ_TIMEOUT', 1 );
define( 'WP_REDIS_DATABASE', 0 );
require_once ABSPATH . 'wp-settings.php';

in wordpress container need install php-redis