Update mysql.md

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Andreas Volkmann 2018-11-02 07:33:18 +00:00
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@ -31,7 +31,7 @@ Database: el_duderino
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If you are wondering why we used `mysql` for the `Host`, read more at
[How is service linked to the job](../docker/using_docker_images.md#how-services-are-linked-to-the-job).
[How services are linked to the job](../docker/using_docker_images.md#how-services-are-linked-to-the-job).
You can also use any other docker image available on [Docker Hub][hub-mysql].
For example, to use MySQL 5.5 the service becomes `mysql:5.5`.