WordPress in Docker incl. HTTPS Let's Encrypt setup


The currently most widespread blogging software WordPress can be operated easily and cost-effectively in Docker containers, among other things. A virtual server or cloud server from a well-known hosting provider can be used as a server, see also: Provider change HostEurope vs Hetzner, vServer vs Cloud Server. If you are not afraid of running your own web server, you can use the setup presented here torun one or more WordPress sites onit, including a free https certificate. The cost of a virtual server starts from 4 $ per month, which is already relatively cheap for running a single website. 


Software WordPress
Hersteller https://wordpress.org
aktuelle Version 6.5
(found: 2024-04-03)

Docker Basics

Docker allows applications to be launched by command in a so-called container.
A container is an isolated environment independent of the operating system (OS):
When a container is first launched, Docker independently loads all the necessary sources
from the internet.
Docker can be installed on Windows, macOS or an Linux Distribution

To ensure that WordPress is can be reached securely from the Internet, I use a Let's Encrypt reverse proxy. At first I used Nginx as Reverse-Proxy, but later replaced it with Traefik. The reverse proxy provides an encrypted HTTPS connection and makes it possible to run multiple websites on one server.

Step by step WordPress and Docker including access from the internet

Hardware requirement:
  1. Almost any hardware can be used for the Docker installation. For example, a virtual server of a provider, or for home: a Mini-PC, notebook, MAC, a NAS: QNAP, Synology or any other hardware with x68-64 architecture on which Windows or Linux can be installed.

Schematic representation: Access from the Internet
Internet access requirements:
  1. Own registered domain, see domain and its management.
  2. Cloudflare or Reverse Proxy:
    1. Cloudflare Tunnel Service
    2. or alternatively:
    3. Port-Forwarding and Reverse Proxy mit Let's Encrypt-Zertifikat
    see also: Cloudflare or Reverse Proxy
The actual Docker setup for WordPress:
  1. create and customize docker-compose.yml
  2. Start container and
  3. Setup

WordPress Docker Compose

To start WordPress using docker compose, you can use the official Docker WordPress image and MySQL as database .Both images can be downloaded, created and started with a simple docker-compose.yml file. The file can be filled with any text editor as follows and then customized:

Filename: docker-compose.yml, Content: 

version: '3.1'


    image: wordpress
    restart: always
      - 80
   #For direct test access, remove "#" in the following 2 lines. Call: http://localhost:83 or http://ServerIP:83
      #- "83:80" 
      WORDPRESS_DB_HOST: wordpress_db
      WORDPRESS_DB_USER: exampleuser
      WORDPRESS_DB_PASSWORD: examplepass
      WORDPRESS_DB_NAME: exampledb

    #Labels for ReverseProxy, see: https://www.libe.net/en-traefik 
      - "traefik.enable=true"
      - "traefik.http.routers.wordpress.rule=Host(`wp.domain.tld`)"      
      - "traefik.http.routers.wordpress.entrypoints=web"
      - "traefik.http.routers.wordpress.entrypoints=websecure"
      - "traefik.http.routers.wordpress.tls.certresolver=myresolver"
      - "traefik.http.services.wordpress.loadbalancer.server.port=80"
      - wordpress:/var/www/html

    image: mysql:5.7
    restart: always
      MYSQL_DATABASE: exampledb
      MYSQL_USER: exampleuser
      MYSQL_PASSWORD: examplepass
      - wordpress-db:/var/lib/mysql


#Without using a reverse proxy (https://www.libe.net/en-traefik) the webproxy network is likely to be missing
#and the following lines can be removed or commented out. Alternatively, the network can be created with "docker network create webproxy".
      name: webproxy

For direct access via IP address or localhost - even without reverse proxy, DNS or public IP - the commented out port setting can be activated for test purposes byremoving"#" in front of "ports" and "-"83:80"" .

For Internet access via the Traefik reverse proxy, the domain must be replaced in the labels with the previously created DNS entries (in the example: wp.domain.tld)The example uses docker volumes rather than bind mounts for permanently storing data. See: Docker data storage: Docker Volumes vs Host Folders

Start container

The start is done from the folder of the docker-compose.yml file with the command "docker-compose up":

docker-compose up -d

Startup / first call of the web interface

When calling the specified domain(https://wp.domain.tld) ,the WordPress setup reports. When testing on your own computer and activating port 83, the call can also be made directly without the Internet via the URLs http://localhost:83 or http://ServerIP:83.


https://wp.domain.tld/wp-admin/ :

Show Docker logs

If something is not working with the setup, it may be worthwhile to take a look at the log files of the web container:

docker logs wordpress_wordpress_1 -f

Docker Admin Interface

For easy management of Docker containers via a web interface, see also: Docker Admin Interface: Portainer Community Edition

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Updated: 2024-04-03 von Bernhard | Übersetzung Deutsch |🔔 | Comments:0

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