Add concrete Docker image version and helptext to Docker pull command in How To Setup Documentation part

[Timmeey]

Background

When following the Install instruction it is necessary to add the concrete version tag yourself when pulling the docker image, as the Docker Image is not (yet) tagged with latest/stable properly.

Changes

Used 0.2.2 as an example, but added a hint to check yourself on DockerHub which is the most recent version

Documentation

Test Plan

PR Quality Checklist

• [X] My pull request is atomic and focuses on a single change.
• [ ] I have thoroughly tested my changes with multiple different prompts.
• [ ] I have considered potential risks and mitigations for my changes.
• [ ] I have documented my changes clearly and comprehensively.
• [X] I have not snuck in any "extra" small tweaks changes

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[Pwuts]

With the latest release, the latest tag was also created