Forcing HTTPS behind TLS termination for Drupal 8/9

[stevenlafl]

Alt title: How to force Drupal 8/9 to output HTTPS URLs when using an nginx reverse proxy

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Insert into settings.php

$settings['reverse_proxy'] = TRUE;
$settings['reverse_proxy_addresses'] = array($_SERVER['REMOTE_ADDR']);

And forward appropriate headers with nginx config

proxy_set_header X-Forwarded-Proto https;
proxy_set_header X-Forwarded-Port 443;

Or with apache in mod_headers.c section

RequestHeader set X-Forwarded-Proto https
RequestHeader set X-Forwarded-Port 443

Thanks @jeffbeagley

[stevenlafl]

Need to add to the README file. Task up for assignment.