Editing Tutorials:Link to container registry on our server (section)

=== Pushing images to the CCU registry ===

To check whether your login works and make the CCU registry known to your docker installation, simply run

<syntaxhighlight lang="bash">
docker login ccu-k8s.inf.uni-konstanz.de:32250
</syntaxhighlight>

The registry is exposed on the standard port 32250, and it will ask for your CCU username and password. After this, you will be able to push your own images to the registry.

==== Example on how to push a specific image ====
Test the successful connection out now:

<syntaxhighlight lang="bash">
docker pull busybox
</syntaxhighlight>

This will pull the simple example image [https://hub.docker.com/_/busybox busybox] (a minimalistic Linux) from the default docker registry, the [https://hub.docker.com/search?q=&type=image Docker hub], which has tons of useful base images for almost anything you might ever need.

In order to "rebrand" this example and publish it under your own account on the CCU registry, you need to tag it with a new name:

<syntaxhighlight lang="bash">
docker tag busybox ccu-k8s.inf.uni-konstanz.de:32250/<your.username>/my_busybox #change busybox to whatever the name of your custom container is
</syntaxhighlight>

Note that you are only allowed to upload images in a subdirectory named after your login.

Finally, push the image to the CCU registry:

<syntaxhighlight lang="bash">
docker push ccu-k8s.inf.uni-konstanz.de:32250/<your.username>/my_busybox #change busybox to whatever the name of your custom container is 
</syntaxhighlight>