Hi all, for our current self hosted Discourse instances, we need to add “IncludeSubDomains” to our STS headers due to this being an expectation of our internal scanners. Previously I achieved this by using some sed commands in app.yml in custom commands after build to update /etc/nginx/conf.d/dis…

Supported way of adding "IncludeSubdomain" to STS headers

supermathie (Michael Brown) January 9, 2026, 10:23pm 2

Does using set_header instead of add_header solve the problem?

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