docker-compose.yml

---
version: '3'

services:
  craft:
    build: ./
    ports:
      - "8080:80"
    volumes:
      - "./craft:/var/www/html"
    depends_on:
      - mysql
    environment:
      ENVIRONMENT: 'dev'
      SECURITY_KEY: 'YouShouldChangeThis'
      DB_DRIVER: 'mysql'
      DB_SERVER: 'mysql'
      DB_USER: 'root'
      DB_PASSWORD: ''
      DB_DATABASE: 'craft'
      DB_SCHEMA: 'public'
      DB_TABLE_PREFIX: ''
      DB_PORT: 3306
  mysql:
    image: mysql:5.5
    environment:
      MYSQL_ALLOW_EMPTY_PASSWORD: 'true'
      MYSQL_DATABASE: 'craft'

Dockerfile

FROM php:7.2-apache

RUN DEBIAN_FRONTEND=noninteractive apt-get update \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y libzip-dev libpng-dev \
    && /usr/local/bin/docker-php-ext-install gd \
    && /usr/local/bin/docker-php-ext-install pdo \
    && /usr/local/bin/docker-php-ext-install pdo_mysql \
    && /usr/local/bin/docker-php-ext-install zip \
    && /usr/sbin/a2enmod rewrite