DDEV "ERR_TOO_MANY_REDIRECTS" because HTTPS is not available (because SSL proxy?)

.htaccess

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</IfModule>

config.yaml

# .ddev/config.yaml
name: temp-test-htacess-https
type: wordpress
docroot: ""
php_version: "7.4"
webserver_type: apache-fpm
router_http_port: "80"
router_https_port: "443"
xdebug_enabled: false
additional_hostnames: []
additional_fqdns: []
mariadb_version: "10.3"
mysql_version: ""
nfs_mount_enabled: false
mutagen_enabled: false
use_dns_when_possible: true
composer_version: "2"
web_environment: []

index.php

<?php
echo "Hello DDEV! <3";