setup.md: Add apache configuration

[nhooyr]

See #1544 (comment)

So many issues that never would have been opened had we had this in the first place.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no activity occurs in the next 5 days.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no activity occurs in the next 5 days.