Docker PHP memcached追加

DockerのPHPでmemcachedを利用できるようにする方法

構成

---docker
|--docker-compose.yml
|--docker
   |--nginx
   |    |--nginx.conf
   |
   |--phpfpm
   |    |--Dockerfile
   |    |--php.ini
   |
   |--memcached
        |--Dockerfile

docker-compose.yml

version: '3'

services:
  memcached:
    container_name: memcached
    build: ./docker/memcached
    #image: memcached:latest
    ports:
        - 11211:11211

  nginx:
    container_name: nginx
    build: ./docker/nginx
    #image: nginx:alpine
    restart: always
    ports:
        - 80:80
    volumes:
        - ./docker/nginx/conf.d/default.conf:/etc/nginx/conf.d/default.conf
        - ./docker/nginx/nginx.conf:/etc/nginx/nginx.conf
        - ./volumes/nginx/:/var/log/nginx
    depends_on:
        - phpfpm

  phpfpm:
    container_name: phpfpm
    build: ./docker/phpfpm
    #image: php:7.3-fpm-alpine
    restart: always
    volumes:
        - ./volumes/www/html:/var/www/html
        - ./docker/phpfpm/php.ini:/usr/local/etc/php/php.ini
        - ./docker/phpfpm/php-fpm.conf:/usr/local/etc/php-fpm.conf

phpfpm/Dockerfile

FROM php:7.3-fpm-alpine

RUN apk update \
&& apk add \
    autoconf \
    libmemcached-dev \
    zlib-dev \
    gcc \
    g++ \
    make \
&& pecl install memcached

phpfpm/php.ini

extension=memcached.so

memcached/Dockerfile

FROM memcached:latest

/volumes/www/html/index.php

<?php

//phpinfo();exit;
$results = array();
$mc = new Memcached();

"memcached"はdocker-compose.ymlのcontainer_nameを指定する
$mc->addServer("memcached", 11211);
$mc->set("test1", "hoge");
$mc->get("test1");

?>