structure/src/docker-compose.yml

version: '3.6'

services:
  php56:
    extends:
      file: docker-compose.base.yml
      service: php-fpm
    build:
      dockerfile: php56.Dockerfile
  php74:
    extends:
      file: docker-compose.base.yml
      service: php-fpm
    build:
      dockerfile: php74.Dockerfile
  php81:
    extends:
      file: docker-compose.base.yml
      service: php-fpm
    build:
      dockerfile: php81.Dockerfile
  workspace74:
    extends:
      file: docker-compose.base.yml
      service: workspace
    build:
      dockerfile: workspace74.Dockerfile
  workspace81:
    extends:
      file: docker-compose.base.yml
      service: workspace
    build:
      dockerfile: workspace81.Dockerfile