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Compose File Example

Deploying Wordpress with docker compose :

docker-compose.yml

version: '3'

services:
  
   db:
     image: mysql:5.7
     volumes:
       - db_data:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: somewordpress
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress

   wordpress:
     depends_on:
       - db
     image: wordpress:latest
     ports:
       - "8000:80"
     restart: always
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
       
volumes:
    db_data:

Using :

  • version 3 of compose file
  • 2 services (db and wordpress)
  • restart policies for containers
  • ports to access web interface
  • environment variables to initialize the database and allow wordpress to connect
  • volume to store data
  • name of service as DNS entry for WORDPRESS_DB_HOST