Memcached issue

[lebacql]

Hello,

When enabling the memcached PHP extension, I get the following error:

PHP Warning:  PHP Startup: Unable to load dynamic library 'memcached.so' (tried: /usr/local/lib/php/extensions/no-debug-non-zts-20170718/memcached.so (libmemcached.so.11: cannot open shared object file: No such file or directory), /usr/local/lib/php/extensions/no-debug-non-zts-20170718/memcached.so.so (/usr/local/lib/php/extensions/no-debug-non-zts-20170718/memcached.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

My service:

front:
    image: thecodingmachine/php:7.2-v1-apache-node8
    working_dir: /var/www/html/front
    labels:
      - traefik.enable=true
      - traefik.backend=front
      - traefik.frontend.rule=Host:foo.localhost
    environment:
      APACHE_DOCUMENT_ROOT: front/
      PHP_INI_MEMORY_LIMIT: 1g
      PHP_EXTENSION_XDEBUG: 1
      PHP_EXTENSION_BCMATH: 1
      PHP_EXTENSION_INTL: 1
      PHP_EXTENSION_GD: 1
      PHP_EXTENSION_MEMCACHED: 1
      STARTUP_COMMAND_1: composer install
      STARTUP_COMMAND_2: yarn install
      STARTUP_COMMAND_3: gulp js less css
    env_file:
      - .env
    volumes:
      - .:/var/www/html:rw