github.com/tiredofit/docker-wordpress

About

This will build a Docker Image for Wordpress. A web based content management system. It will:

• Automatically Download latest version of Wordpress
• Configure wp-config.php for you
• Install Database
• Configure the website with basic information
• Automatically rotate URLs on subsequent boots if they have changed
• Includes WP-CLI

Maintainer

• Dave Conroy

Table of Contents

• About
• Maintainer
• Table of Contents
• Prerequisites and Assumptions
• Installation
  • Build from Source
  • Prebuilt Images
    • Multi Architecture
• Configuration
  • Quick Start
  • Persistent Storage
  • Environment Variables
    • Base Images used
  • Networking
• Maintenance
  • Shell Access
  • Local Development / Changing Site Name & Ports
  • Command Line
• Support
  • Usage
  • Bugfixes
  • Feature Requests
  • Updates
• License
• Maintenance
  • Shell Access
• References

Prerequisites and Assumptions

• Assumes you are using some sort of SSL terminating reverse proxy such as:
  • Traefik
  • Nginx
  • Caddy

Installation

Build from Source

Clone this repository and build the image with docker build <arguments> (imagename) .

Prebuilt Images

Builds of the image are available on Docker Hub

docker pull docker.io/tiredofit/wordpress:(imagetag)

Builds of the image are also available on the Github Container Registry

docker pull ghcr.io/tiredofit/docker-wordpress:(imagetag)

The following image tags are available along with their tagged release based on what's written in the Changelog:

PHP version	OS	Tag
8.3.x	Alpine	:php-8.3
8.2.x	Alpine	:php-8.2
8.1.x	Alpine	:php-8.1
8.0.x	Alpine	:php-8.0
7.4.x	Alpine	:php-7.4
7.3.x	Alpine	:php-7.3
7.2.x	Alpine	:php-7.2
7.1.x	Alpine	:php-7.1
7.0.x	Alpine	:php-7.0
5.6.x	Alpine	:php5.6

Multi Architecture

Images are built primarily for amd64 architecture, and may also include builds for arm/v7, arm64 and others. These variants are all unsupported. Consider sponsoring my work so that I can work with various hardware. To see if this image supports multiple architecures, type docker manifest (image):(tag)

Configuration

Quick Start

• The quickest way to get started is using docker-compose. See the examples folder for a working compose.yml that can be modified for development or production use.

• Set various environment variables to understand the capabilities of this image.

• Map persistent storage for access to configuration and data files for backup.

Persistent Storage

The following directories are used for configuration and can be mapped for persistent storage.

Directory	Description
/www/wordpress	Root Wordpress Directory
/www/logs	Nginx and php-fpm logfiles

Environment Variables

Base Images used

This image relies on an Alpine Linux base image that relies on an init system for added capabilities. Outgoing SMTP capabilities are handlded via msmtp. Individual container performance monitoring is performed by zabbix-agent. Additional tools include: bash,curl,less,logrotate,nano.

Be sure to view the following repositories to understand all the customizable options:

Image	Description
OS Base	Customized Image based on Alpine Linux
Nginx	Nginx webserver
PHP-FPM	PHP Interpreter

Parameter	Description	Default	_FILE
ADMIN_EMAIL	Email address for the Administrator - Needed for initial startup		x
ADMIN_USER	Username for the Administrator - Needed for initial startup	admin	x
ADMIN_PASS	Password for the Administrator - Needed for initial startup		x
ENABLE_HTTPS_REVERSE_PROXY	Tweak nginx to run behind a reverse proxy for URLs TRUE / FALSE	TRUE
DB_CHARSET	MariaDB character set for tables	utf8mb4
DB_HOST	MariaDB external container hostname (e.g. wordpress-db)		x
DB_NAME	MariaDB database name i.e. (e.g. wordpress)		x
DB_USER	MariaDB username for database (e.g. wordpress)		x
DB_PASS	MariaDB password for database (e.g. userpassword)		x
DB_PORT	MariaDB port for database	3306	x
DB_PREFIX	MariaDB Prefix for DB_NAME	wp_	x
DEBUG_MODE	Enable Debug Mode (verbosity) for the container installation/startup and in application - TRUE / FALSE	FALSE
ROTATE_KEYS	Rotate Salts and Keys on subsequent reboots TRUE / FALSE	FALSE
SITE_LOCALE	What Locale to set site	en_US
SITE_PORT	What Port does wordpress deliver assets to	80
SITE_TITLE	The title of the Website	Docker Wordpress
SITE_URL	The Full site URL of the installation e.g. wordpress.example.com - Needed for initial startup
SITE_URL_UPDATE_MODE	After first install, perform modifications to wp-config.php and DB if different Site URL FILE DB ALL NONE	ALL
UPDATE_MODE	ALL to enable all major, minor updates, MINOR to only allow minor updates NONE to disable all updates	minor

Networking

The following ports are exposed.

Port	Description
80	HTTP

---

Maintenance

Shell Access

For debugging and maintenance purposes you may want access the containers shell.

docker exec -it (whatever your container name is) bash

Local Development / Changing Site Name & Ports

Wordpress assets are delivered by means of the initial Site URL, and if you wish to develop locally or on a different port you will experience strange results. If you are performing local development then you would want to setup your environment variables as such:

• ENABLE_HTTPS_REVERSE_PROXY=FALSE
• SITE_URL=localhost
• SITE_PORT=8000 (or whatever port you are exposing)

When you are ready to deploy to a production URL - you would change it as such:

• ENABLE_HTTPS_REVERSE_PROXY=TRUE
• SITE_URL=www.domain.com

The system will rotate the URLs in the wordpress configuration files and database automatically upon restart of the container.

Command Line

If you wish to use the included wp-cli tool to perform maintenance use it as such:

cd /www/wordpress
wp-cli <argument>

Support

These images were built to serve a specific need in a production environment and gradually have had more functionality added based on requests from the community.

Usage

• The Discussions board is a great place for working with the community on tips and tricks of using this image.
• Consider sponsoring me for personalized support

Bugfixes

• Please, submit a Bug Report if something isn't working as expected. I'll do my best to issue a fix in short order.

Feature Requests

• Feel free to submit a feature request, however there is no guarantee that it will be added, or at what timeline.
• Consider sponsoring me regarding development of features.

Updates

• Best effort to track upstream changes, More priority if I am actively using the image in a production environment.
• Consider sponsoring me for up to date releases.

License

MIT. See LICENSE for more details.

Maintenance

Shell Access

For debugging and maintenance purposes you may want access the containers shell.

docker exec -it (whatever your container name is e.g. wordpress) bash

References

• https://www.wordpress.org
• http://www.wp-cli.org