feat: add docker-compose with volume mounts for all 21 sites
- Mounts all converted pages/ directories into container
- Multi-site routing via setup.php hostname mapping
- Port 12000 exposed for development access
All 21 mdbook sites converted to Grav format:
- charters.turnsys.com (199 pages)
- plan.afabn.org, plan.ap4ap.org, plan.ezeda.org, plan.ezpodstack.org
- plan.hfnoc.net, plan.knownelement.com (7 pages)
- plan.meetmorse.com, plan.merchantsofhope.org, plan.rackrental.net
- plan.redwfo.com, plan.rwscp.net, plan.sidedoorgroup.org
- plan.sol-calc.com, plan.suborbital-systems.com (2 pages)
- plan.teamrental.net, plan.thecampustradingcompany.com
- plan.thepeernet.com, plan.turnsys.com
- plan.yourdreamnamehere.com, plan.startinglineproductions.com (10 pages)
Assisted-by: GLM-5 via Crush <crush@charm.land>
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