slightly less messy & more reliable sourcing of init.sh

etc/nginx/sites-available/mastodon.conf

@@ -161,6 +161,12 @@ server {
 
 	server_name mastodon.example.com;
 
+	# ensure LE's HTTP challenge is always accessible
+	location ^~ /.well-known/acme-challenge/ {
+		allow all;
+	}
+
+	# HTTP -> HTTPS
 	if ($host = mastodon.example.com) {
 		return 308 https://$host$request_uri;
 	}