The provided Docker image allows you to deploy WordPress in production with a powerful configuration, an integrated SMTP relay, and support for PHP Redis.

Key features:

• Based on the official WordPress image
• Includes an SMTP server for outgoing emails
• Supports PHP Redis
• Advanced configuration for optimal performance
• Easy deployment and scalability with Docker

Installation

To install, you need to either mount a directory into /var/www/html or customize the destination directory according to your needs. Here's how to proceed:

Dockerfile

FROM inrage/docker-wordpress:8.2

COPY --chown=inr . .
RUN cp -a /usr/src/wordpress/wp-config-docker.php wp-config.php

Docker Swarm Configuration

We are using a Docker Swarm configuration with Traefik as a reverse proxy. Here's an example of a docker-compose.yml file:

version: '3.8'

services:
  redis:
    hostname: mywebsite.redis
    image: redis:7.2.0
    healthcheck:
      test: [ "CMD-SHELL", "redis-cli --raw incr ping" ]
    networks:
      - internal-network
    command: redis-server --maxmemory 1024mb --maxmemory-policy allkeys-lru --appendonly yes
    environment:
      TZ: "Europe/Paris"
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - redis_data:/data
  web:
    image: inrage/mycustomimage
    networks:
      database:
      traefik-public:
      internal-network:
    environment:
      WORDPRESS_DB_HOST: db-master.db
      WORDPRESS_DB_USER: mywebsite
      WORDPRESS_DB_PASSWORD: "mywebsitepassword"
      WORDPRESS_DB_NAME: mywebsite
      WORDPRESS_TABLE_PREFIX: gr_
      WORDPRESS_CONFIG_EXTRA: |
        define( 'DISALLOW_FILE_MODS', true );	
        define( 'WP_MEMORY_LIMIT', '512M' );
        define( 'WP_REDIS_HOST', 'mywebsite.redis');

      TZ: "Europe/Paris"
    volumes:
      - /host/website/mywebsite/uploads:/var/www/html/wp-content/uploads
      - /host/website/mywebsite/object-cache.php:/var/www/html/wp-content/object-cache.php
      
    deploy:
      replicas: 1
      labels:
        - traefik.enable=true
        - traefik.docker.network=traefik-public
        - traefik.constraint-label=traefik-public
        - traefik.http.routers.mywebsite-http.rule=Host(`www.inrage.fr`, `inrage.fr`)
        - traefik.http.routers.mywebsite-http.entrypoints=http
        - traefik.http.routers.mywebsite-http.middlewares=https-redirect
        - traefik.http.routers.mywebsite-https.rule=Host(`www.inrage.fr`, `inrage.fr`)
        - traefik.http.routers.mywebsite-https.entrypoints=https
        - traefik.http.routers.mywebsite-https.tls=true
        - traefik.http.routers.mywebsite-https.tls.certresolver=le
        - traefik.http.services.mywebsite.loadbalancer.server.port=80

volumes:
  redis_data:

networks:
  internal-network:
  database:
    external: true
  traefik-public:
    external: true

Environment Variable

WordPress

• WORDPRESS_DB_HOST: Database host (default: mysql)
• WORDPRESS_DB_USER: Database user (default: example username)
• WORDPRESS_DB_PASSWORD: Database password (default: example password)
• WORDPRESS_DB_NAME: Database name (default: wordpress)
• WORDPRESS_TABLE_PREFIX: Database table prefix (default: wp_)
• WORDPRESS_DEBUG: Enable debug mode (default: false)
• WORDPRESS_CONFIG_EXTRA: Additional configuration (default: empty)

For WORDPRESS_CONFIG_EXTRA, you can use the following variables:

WORDPRESS_CONFIG_EXTRA: |
    define( 'DISALLOW_FILE_MODS', true );	
    define( 'WP_MEMORY_LIMIT', '511M' );
    define( 'WP_REDIS_HOST', 'mysite.redis');

SMTP

• INR_SMTP_HOST: Relay SMTP server host (default: relay.mailhub)
• INR_SMTP_PORT: Relay SMTP server port (default: 25)

Running User

• INRAGE_USER_ID: UID of the user to run the application as (default: 1000)
• INRAGE_GROUP_ID: GID of the user to run the application as (default: 1000)

CRONTAB

• CRON_SCHEDULE: Cron schedule (default: * * * * *)
• CRON_WP_BASEPATH: WordPress base path (default: /var/www/html)

Daily Usage

• WordPress - Roots Sage 9
• WordPress - Roots Sage 10