Effortless WordPress Deployment with Docker-Compose

Keeping up with and setting up a WordPress site can be hard, especially when you have to deal with dependencies, server setups, and problems with compatibility. Docker-Compose makes this process easier, letting you run WordPress and its services, like MySQL, in separate, simple containers. If you're a developer looking for a consistent work environment or a site owner looking for a secure and scalable setup, Docker-Compose is a quick and easy way to install WordPress. This guide will show you how to use Docker-Compose to easily set up and run your WordPress site.

Make sure you have Docker and Composer installed. We'll start by breaking down the Docker-Compose configuration file. Here's the full code you’ll use to set up WordPress with MySQL:

version: '3.3'

services:
  db:
    image: mysql:5.7
    volumes:
      - db_data:/var/lib/mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: wordpress
      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
      WORDPRESS_DB_NAME: wordpress
volumes:
  db_data: {}

Open a terminal and create a new directory for your project. Inside this directory, create a file named docker-compose.yml and paste the above code into it.

mkdir wordpress-docker
cd wordpress-docker
nano docker-compose.yml

With the file saved, run the following command to start the containers:

docker-compose up -d

This command will pull the necessary images (WordPress and MySQL) and start the services in detached mode (in the background).

Once the containers run, open your browser and go to http://localhost:8000. You should see the WordPress installation page where you can set up your site.

Now that you’ve learned the basics of running WordPress with Docker-Compose, try extending the setup by adding services like Nginx or Redis, or explore Docker’s networking capabilities to improve the performance and reliability of your WordPress site!

How to edit "WP_MEMORY_LIMIT" and other PHP.ini values?

We can do this by adding custom PHP configurations to your WordPress container. Modify your docker-compose.yaml file to address this issue:

version: '3.3'

services:
  db:
    # ... (db service remains unchanged)

  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
      WORDPRESS_DB_NAME: wordpress
      WORDPRESS_CONFIG_EXTRA: |
        define('WP_MEMORY_LIMIT', '256M');
        define('WP_MAX_MEMORY_LIMIT', '256M');
    volumes:
      - ./php.ini:/usr/local/etc/php/conf.d/uploads.ini
volumes:
  db_data: {}

Now, create a new file named php.ini in the same directory as your docker-compose.yaml file with the following content:

upload_max_filesize = 64M
post_max_size = 64M
max_execution_time = 300

We've added a volumes section to the wordpress service to mount a custom php.ini file. The new php.ini file increases the upload_max_filesize, post_max_size, and max_execution_time.