Docker config for PHP 7.4 development with e-mail and MySQL.

docker-compose.yml

version: "3"

services:
  web:
    build: .
    container_name: app-web
    ports:
      - 8080:8080
    working_dir: /home/web
    volumes:
      - .:/home/web
    command: sh ./docker/web/entrypoint.sh
    links:
      - mail
      - db

  mail:
    image: mailhog/mailhog
    container_name: app-mailhog
    ports:
      - 1025:1025
      - 8025:8025
  db:
    image: mysql:8
    container_name: app-db
    volumes:
      - ./docker/db/mysql:/var/lib/mysql
    ports:
      - "3306:3306"
    environment:
      - MYSQL_DATABASE=app_db
      - MYSQL_ROOT_PASSWORD=root

Dockerfile

FROM php:7.4-alpine

RUN docker-php-ext-install pdo pdo_mysql