Docker Compose PHP Composer Example

composer.json

{
  "repositories": [
    {
      "type": "vcs",
      "url": "https://github.com/lorenza/hello-world"
    }
  ],
  "require": {
    "lorenza/hello-world": "dev-master"
  }
}

docker-compose.yml

app:
  image: php:7
  command: php -S 0.0.0.0:8000 /app/index.php
  ports:
    - "8000:8000"
  volumes:
    - .:/app

composer:
  restart: 'no'
  image: composer/composer:php7
  command: install
  volumes:
    - .:/app

index.php

<?php
require 'vendor/autoload.php';

use HelloWorld\SayHello;
echo SayHello::world();