我检查了 PHP 容器，可以看到 php.ini 文件的设置正确，或者我认为是这样?

I've checked the PHP container and I can see the php.ini file is there with the correct settings, or so I think?

$ docker exec -it mymagento2docker_php_1 /bin/bash 
# cat /usr/local/etc/php/php.ini                                                                                                                  
; This file is created automatically by the docker build

memory_limit = 2G
max_execution_time = 800

我做错了什么?以下是更多详细信息，在此先感谢！

What am I doing wrong? Below are some more details, thanks in advance!

.
├── docker-compose.yml
├── index.php
├── magento2
│   ├── [DIRECTORIES & FILES OMMITED]
│                   
├── nginx
│   ├── Dockerfile
│   ├── default.conf
│   └── nginx.conf
├── output.txt
├── php
    ├── Dockerfile
    └── config
        └── php.ini

<小时>

docker-compose.yml

nginx:
    build: ./nginx/
    ports:
        - 80:80
    links:
        - php
    volumes_from:
        - app

php:
    build: ./php/
    expose:
        - 9000
    links:
        - mysql
    volumes_from:
        - app

app:
    image: php:7.0-fpm
    volumes:
        - ./magento2:/var/www/html
    command: "true"

mysql:
    image: mysql:latest
    volumes_from:
        - data
    ports:
        - "3306:3306"        
    environment:
        MYSQL_ROOT_PASSWORD: mage2
        MYSQL_DATABASE: mage2
        MYSQL_USER: mage2
        MYSQL_PASSWORD: mage2 

data:
    image: mysql:latest
    volumes:
        - /var/lib/mysql
    command: "true"

phpmyadmin:
    image: phpmyadmin/phpmyadmin
    ports:
        - 8080:80
    links:
        - mysql
    environment:
        PMA_HOST: mysql    

<小时>

php/Dockerfile

FROM php:7.0-fpm

# Install dependencies
RUN apt-get update 
  && apt-get install -y 
    cron 
    libfreetype6-dev 
    libicu-dev 
    libjpeg62-turbo-dev 
    libmcrypt-dev 
    libpng12-dev 
    libxslt1-dev

# Configure the gd library
RUN docker-php-ext-configure 
  gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/

# Install required PHP extensions
RUN docker-php-ext-install 
  gd 
  intl 
  mbstring 
  mcrypt 
  pdo_mysql 
  xsl 
  zip 
  soap

# Install the 2.4 version of xdebug that's compatible with php7
RUN pecl install -o -f xdebug-2.4.0

COPY config/php.ini /usr/local/etc/php/

<小时>

## php/config/php.ini ##
; This file is created automatically by the docker build

memory_limit = 2G
max_execution_time = 800

更新

我试过用下面的方法重启nginx，但是没用.

UPDATE

I've tried restarting nginx with the below, but it did not work.

$ docker exec -it mymagento2docker_php_1 /bin/bash 
# /etc/init.d/nginx restart                                                                                                                       
bash: /etc/init.d/nginx: No such file or directory
# service nginx restart    
nginx: unrecognized service
# nginx -s reload          
bash: nginx: command not found
# exit
$ docker restart mymagento2docker_nginx_1
mymagento2docker_nginx_1

$ docker exec -it mymagento2docker_nginx_1 /bin/bash 
# /etc/init.d/nginx restart                                                                                                                                   
Restarting nginx: nginxross in ~/my-magento2-docker
$ docker-compose ps
            Name                          Command             State            Ports          
---------------------------------------------------------------------------------------------
mymagento2docker_app_1          true                          Exit 0                          
mymagento2docker_data_1         docker-entrypoint.sh true     Exit 0                          
mymagento2docker_mysql_1        docker-entrypoint.sh mysqld   Up       0.0.0.0:3306->3306/tcp 
mymagento2docker_nginx_1        nginx -g daemon off;          Exit 0                          
mymagento2docker_php_1          php-fpm                       Up       9000/tcp               
mymagento2docker_phpmyadmin_1   /run.sh phpmyadmin            Up       0.0.0.0:8080->80/tcp   
ross in ~/my-magento2-docker
$ docker-compose up -d
Starting mymagento2docker_app_1
Starting mymagento2docker_data_1
mymagento2docker_mysql_1 is up-to-date
mymagento2docker_phpmyadmin_1 is up-to-date
mymagento2docker_php_1 is up-to-date
Starting mymagento2docker_nginx_1
ross in ~/my-magento2-docker
$ docker exec -it mymagento2docker_nginx_1 /bin/bash 
# service nginx restart                                                                                                                                       
Restarting nginx: nginxross in ~/my-magento2-docker
$ docker-compose up -d
Starting mymagento2docker_app_1
Starting mymagento2docker_data_1
mymagento2docker_mysql_1 is up-to-date
mymagento2docker_phpmyadmin_1 is up-to-date
mymagento2docker_php_1 is up-to-date
Starting mymagento2docker_nginx_1
ross in ~/my-magento2-docker
$ docker exec -it mymagento2docker_nginx_1 /bin/bash 
# nginx -s reload                                                                                                                                             
2016/10/05 14:07:43 [notice] 12#12: signal process started
# 

推荐答案

在 docker-compose.yml 中的 php 服务中添加 volumes: 部分 文件，将带有 custom.ini 文件的本地目录映射到 /usr/local/etc/php/conf.d，然后重新启动容器.该文件中的任何有效设置都将覆盖主 php.ini 文件中的设置.(顺便说一句，你可以用 MySQL 做同样的事情，但不能用 Nginx).

Add a volumes: section to your php service in the docker-compose.yml file, map a local directory with a custom.ini file to /usr/local/etc/php/conf.d, and restart your container. Whatever valid settings in that file will override those from the main php.ini file. (Incidentally you can do the same with MySQL but not with Nginx).

这适用于我自己的项目:

This works in my own project: