Docker

Articles on running different services in Docker: how to set up Postfix containers and send emails from WordPress, add XDebug to WordPress in Docker, test WordPress themes and plugins in Docker containers before using anything on production, add a simple email forwarder, etc.

Articles

• How to Add XDebug to the Official Docker WordPress Image
  Use a Dockerfile to add XDebug to the official Docker WordPress image:
  • Build your own WordPress image with XDebug enabled.
    See examples of Dockerfile and docker-compose.yml.
  • Do not want to build? Download a pre-made image from a repository on Docker Hub.
  • See how to configure PhpStorm for debugging.
  • Learn how to separate production and development environments using multiple Docker Compose files.
  • See how to use Nginx in Docker as a Reverse Proxy.
  • See how to add PHP extensions to the Docker WordPress Image.
• [Docker] How to Set up Postfix Containers and Send Emails From WordPress in Docker
  Add SMTP mail functionality to a Docker WordPress image. See how to
  • Set up a Postfix Docker container with DKIM.
  • Configure your Docker WordPress Container to Use Postfix
  • Add Postfix to a WordPress container with a Dockerfile.
  • Set a PTR record for reverse DNS lookup.
  • Set DNS records: SPF and DKIM.
• [Docker] How to Create a Simple Self-Hosted Email Forwarder in 2025
  Create a mail forwarder in a Docker container. The solution is quick and simple:
  1. Add MX records for all domains that require mail forwarding.
  2. Configure and run the Docker container.
• How to Use WordPress Docker Container for Testing Themes and Plugins Locally
  Test WordPress themes and plugins locally in Docker containers before deploying them on production:
  • Install WordPress quickly with Docker Compose.
    See the example of docker-compose.yml.
  • Reinstall WordPress in a Docker container easily.
• How to Debug an Endlessly Restarting Docker Container
  Fix an endlessly restarting Docker container:
  1. Override the entrypoint with 'docker run' or in Compose.
  2. Debug inside the container.