- Production compose stack with postgres, web, worker, caddy services (D-01..D-04, D-08)
- postgres service has no host ports binding (internal network only, T-07-09 mitigated)
- web and worker use same image with different command: values (/app/web, /app/worker)
- Both web and worker depend_on postgres with service_healthy condition (T-07-12 mitigated)
- Caddy handles TLS via Let's Encrypt with persistent caddy_data and caddy_config volumes (D-04)
- Caddyfile uses {$DOMAIN} env var interpolation for the site block (RESEARCH Pattern 6)
- Caddyfile includes Let's Encrypt staging note to avoid rate limits (RESEARCH Pitfall 4)
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