document HOME env var for non-root/windmill user

[alpetric]

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[claude]

Claude finished @alpetric's task in 1m 20s —— View job

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Reviewing PR #7466

• Gather context and understand the changes
• Review the code changes
• Provide feedback

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Review Summary

Overall Assessment: ✅ Approved

This PR adds a helpful documentation comment to docker-compose.yml explaining the need to set HOME=/tmp when running Windmill workers with a non-root/non-windmill UID.

What Changed

The PR adds two comment lines to the windmill_worker service environment section:

# If running with non-root/non-windmill UID (e.g., user: "1001:1001"),
# add: - HOME=/tmp

Code Quality

Positives:

• The comment is clear and provides a concrete example (user: "1001:1001")
• Good placement near related configuration (after WORKER_GROUP, before other commented options)
• Follows the existing documentation comment style in the file

Minor Suggestions:

1. Consider adding this to windmill_worker_native as well – If this issue affects the default worker, it likely also affects the native worker service which has a similar environment section. For consistency, the same comment could be added there too.

2. Linking to documentation – If there's relevant documentation about running Windmill as non-root, adding a reference URL (similar to the security isolation comment above) would be helpful for users seeking more context.

No Issues Found

• ✅ No bugs or logic issues (it's just a comment)
• ✅ No security implications
• ✅ No performance impact
• ✅ Follows existing code style

Verification Instructions

This change adds documentation only. To verify: open the docker-compose.yml file and scroll to the windmill_worker service's environment section (around line 67-72) to confirm the new comment explaining the HOME=/tmp environment variable requirement for non-root deployments is present and clearly readable.

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