two wordpress sites, nginx-proxy, mariadb, and phpmyadmin. uses official WordPress container from hub.docker.com

docker-compose.yml

version: "2"
services:
  nginx-proxy:
    image: jwilder/nginx-proxy
    container_name: nginx-proxy
    ports:
      - "80:80"
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro
  db:
    image: mariadb
    volumes:
      - mysql:/var/lib/mysql
    ports:
      - "8001:3306"
    environment:
      - MYSQL_ROOT_PASSWORD=secret
  phpmyadmin:
    image: phpmyadmin/phpmyadmin:latest
    ports:
      - "8002:80"
    links:
      - db:mysql
    environment:
      - MYSQL_ROOT_PASSWORD=secret
      - VIRTUAL_HOST=phpmyadmin.app
      - VIRTUAL_PORT=8002
  wp1:
    image: wordpress
    volumes:
      - ./wp1:/var/www/html
    ports:
      - "8003:80"
    links:
      - db:mysql
    environment:
      - WORDPRESS_DB_NAME=wp1
      - WORDPRESS_DB_PASSWORD=secret
      - VIRTUAL_HOST=wp1.dev
      - VIRTUAL_PORT=8003
  wp2:
    image: wordpress
    volumes:
      - ./wp2:/var/www/html
    ports:
      - "8004:80"
    links:
      - db:mysql
    environment:
      - WORDPRESS_DB_NAME=wp2
      - WORDPRESS_DB_PASSWORD=secret
      - VIRTUAL_HOST=wp2.dev
      - VIRTUAL_PORT=8004
volumes:
  mysql:

hosts

# Docker (nginx-proxy)
127.0.0.1	wp1.dev
127.0.0.1	wp2.dev
127.0.0.1	phpmyadmin.app