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docs: explain how to populate super globals with env vars

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Kévin Dunglas
2023-09-16 11:03:12 +02:00
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docs/config.md
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@@ -69,6 +69,10 @@ The following environment variables can be used to inject Caddy directives in th
* `CADDY_GLOBAL_OPTIONS`: inject [global options](https://caddyserver.com/docs/caddyfile/options)
* `FRANKENPHP_CONFIG`: inject config under the `frankenphp` directive
Unlike with FPM and CLI SAPIs, environment variables are **not** exposed by default in superglobals `$_SERVER` and `$_ENV`.
To propagate environment variables to `$_SERVER` and `$_ENV`, set the `php.ini` `variables_order` directive to `EGPS`.
## Enable the Debug Mode
When using the Docker image, set the `CADDY_DEBUG` environment variable to `debug` to enable the debug mode: