Dockerize Moodle application

Create the docker-compose.yml file to deploy a Moodle application, using Nginx as a webserver, latest PHP, and MySQL as a database engine:

version: '3.7'
services:
  nginx:
    image: nginx:latest
    ports: 
      - 80:80
    volumes:
      - ./moodle:/var/www/html
  php:
    image: php:latest
    depends_on:
      - nginx
    volumes:
      - ./moodle:/var/www/html
  mysql:
    image: mysql:latest
    environment:
      MYSQL_ROOT_PASSWORD: my-secret-pw
    volumes:
      - db:/var/lib/mysql
volumes:
  db:
    external:

Do I need to install Moodle in docker from an image or from a moodle downloaded directory files?

You can install Moodle from a downloaded directory of Moodle files, or you can use an existing image to quickly deploy a Moodle application in Docker.