The Cache-Control rule I added in the previous commit used a nested
`location ~* \.(html|css|js|webmanifest)$`. nginx does NOT inherit add_header into a
block that declares its own add_header, so every HTML, CSS and JS response would have
been served WITHOUT the CSP, HSTS, X-Frame-Options, Referrer-Policy and nosniff headers
from the Phase S hardening — the headers dropped for exactly the files that matter most,
and silently, since the pages would still work.
Now computed by `map $uri $wp_cache_control` at http level and applied with one
server-level add_header alongside the security headers, so nothing is scoped away. An
empty value makes nginx omit the header entirely, so images and fonts stay cacheable.
Applied to both the Docker config (nginx/conf.d/wp-suite.conf) and the bare-metal one
(nginx-wp-suite.conf), which carries the same header set.
Caught while checking whether the stack was safe to redeploy. Not verified with
`nginx -t` — this machine has neither nginx nor docker — so DEPLOYMENT.md now records
the rule and the one-line curl that confirms both headers are present after a deploy.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
n.siegfried
a9b22f2add