docker-compose.yml

application:
  image: tianon/true
  volumes:
    - .:/var/www/myapp
mysql:
  image: mariadb:10.1
  ports:
    - "3308:3306"
  environment:
    MYSQL_ROOT_PASSWORD:123
    MYSQL_USER: myapp
    MYSQL_PASSWORD: 123
    MYSQL_DATABASE: myapp
nginx:
  image: nginx:1.9
  dns:
    - 8.8.8.8
    - 8.8.4.4
  ports:
    - "80:80"
  links:
    - php
  volumes_from:
    - application
  volumes:
      - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf
php:
  build: ./docker/php
  dns:
    - 8.8.8.8
    - 8.8.4.4
  links:
    - mysql
  volumes_from:
    - application

nginx_default.conf

server {
    listen  80;

    root /var/www/myapp/web;
    server_name myapp;

    location / {
        # try to serve file directly, fallback to app.php
        try_files $uri /index.php$is_args$args;
    }

    location ~ ^/.+\.php(/|$) {
        fastcgi_pass php:9000;
        fastcgi_split_path_info ^(.+\.php)(/.*)$;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param HTTPS off;
    }
}

nginx_Dockerfile

FROM nginx:1.9

COPY ./ /var/www/myapp
COPY ./docker/nginx/default.conf /etc/nginx/conf.d/default.conf

EXPOSE 80

php_Dockerfile

FROM php:7-fpm

        RUN apt-get update && apt-get install -y curl wget git zlib1g-dev libicu-dev g++

RUN echo 'date.timezone = Europe/Copenhagen' > /usr/local/etc/php/conf.d/date.ini

        RUN touch /usr/local/etc/php/conf.d/xdebug.ini; \
        echo xdebug.remote_enable=1 >> /usr/local/etc/php/conf.d/xdebug.ini; \
        echo xdebug.remote_connect_back=1 >> /usr/local/etc/php/conf.d/xdebug.ini; \
        echo xdebug.remote_port=9000 >> /usr/local/etc/php/conf.d/xdebug.ini;

        RUN    mkdir ~/software && \
        cd  ~/software/ && \
        wget --no-check-certificate http://xdebug.org/files/xdebug-2.4.0rc4.tgz && \
        tar -xvzf xdebug-2.4.0rc4.tgz && \
        cd xdebug-2.4.0RC4 && \
        phpize && \
        ./configure && \
        make && \
        cp modules/xdebug.so /usr/local/lib/php/extensions/no-debug-non-zts-20151012 && \
        echo "zend_extension = /usr/local/lib/php/extensions/no-debug-non-zts-20151012/xdebug.so" >> /usr/local/etc/php/php.ini

        RUN docker-php-ext-configure intl \
        && docker-php-ext-install pdo pdo_mysql zip intl

RUN curl -sS https://getcomposer.org/installer | php
RUN mv composer.phar /usr/local/bin/composer