Building the Container
======================

Overview
--------

The Traefik Docker container image is built automatically using a GitLab CI runner. This build process is triggered on every push to the `main` branch of the repository.

Build Process
-------------

When changes are pushed to `main`, GitLab CI performs the following steps:

1. **Parse the Traefik version** from the `Dockerfile.traefik` file.
2. **Build the container image** using the `Dockerfile.traefik`.
3. **Tag the image** with two tags:
   - `:latest`
   - `:<traefik-version>` (e.g., `:2.10.4`)
4. **Push the image** to the configured container registry.

Version Detection
-----------------

The Traefik version is extracted from the `FROM` line in the `Dockerfile.traefik`. For example:

.. code-block:: dockerfile

   FROM traefik:2.10.4

In this case, the version tag `2.10.4` will be used to tag the built image.

Usage
-----

To trigger a build:

- Commit your changes
- Push to the `main` branch

The GitLab CI runner will take care of the rest.