Create instructional video for Learn about the docker registry

We need a video covering the basics of git for #1593 (closed). Once the video is completed, please upload the video to the Onboarding Folder' in Google drive. If you recorded the video using Zoom, please upload the video+audio version of it so it contains everything.

If your video needs editing, please ping myself (@jcolyer) in this issue and I would be more than willing to do this for you!

The video should cover the following:

Checklist:

• Setup the GitLab container registry on a GitLab instance
• Push a change to the container registry
• Download an image from the container registry

Documentation:

• GitLab Container Registry