Basic Docker setup for Magento

docker-compose.yml

version: '3'

services:
  web:
    build: .
    volumes:
      - .:/var/www/html
    ports:
      - 8181:80

  db:
    image: mariadb
    ports:
      - 13306:3306
    environment:
      MYSQL_ROOT_PASSWORD: password

Dockerfile

FROM php:7.1-apache

RUN apt-get update -y && apt-get install -y libmcrypt-dev libxslt-dev \
    zlib1g-dev libjpeg-dev libpng-dev libfreetype6-dev \
    && docker-php-ext-install -j$(nproc) mcrypt \
    && docker-php-ext-install -j$(nproc) xsl \
    && docker-php-ext-install -j$(nproc) intl \
    && docker-php-ext-install -j$(nproc) pdo_mysql \
    && docker-php-ext-install -j$(nproc) soap \
    && docker-php-ext-install -j$(nproc) zip \
    && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ \
    --with-jpeg-dir=/usr/include/ \
    && docker-php-ext-install -j$(nproc) gd

RUN a2enmod rewrite

COPY . /var/www/html