[Jan Egil Ring (janegilring)]

This pull request updates the LocalBox setup and participant challenge documentation to clarify and automate the inclusion of a shared "reference VM" (sov-ref-vm) for event readiness and assessment. It also improves instructions for network configuration, rerunning preparations, and the handling of Marketplace image imports. The changes aim to make the preparation process safer, more repeatable, and clearer for both organizers and participants.

Key changes include:

Reference VM automation and usage

• The preparation script now enables the creation of a shared reference VM (sov-ref-vm) by default, with an option to skip via -IncludeReferenceVm:$false. Guidance is added on how to use this VM for assessment without modifying it, and how participants should distinguish between their own VM and the reference VM in their observations. [1] [2] [3] [4] [5]

Network and storage configuration clarification

• Documentation now distinguishes between the standard greenfield LocalBox network configuration and customized networks, specifying when to review DHCP exclusions and reservations, and clarifies the IP pool settings for both scenarios. [1] [2] [3] [4]

Preparation script improvements and rerun guidance

• The preparation process is now documented as running in a specific order, and it no longer requires explicit address-reservation confirmation for standard setups. Detailed instructions are provided for rerunning preparation after failures, including how storage and image import steps behave on reruns. [1] [2]

Marketplace image import and recovery

• If a Marketplace image import fails, the script now verifies and deletes only the failed image before retrying, ensuring the correct version is used based on the Edge Marketplace catalog. The process avoids endless retries and provides clear error handling and manual intervention guidance.

Challenge and readiness checklist updates

• Participant challenge instructions and readiness checklists are updated to reflect the new reference VM workflow, clarify how to record Defender and Update Manager results, and emphasize not altering the shared VM. [1] [2]

These changes collectively improve the reliability, clarity, and security of the LocalBox preparation and event-readiness process.