Discovery url returns url with incorrect port

[Windree]

Steps to reproduce

1. Install owncloud docker server using docker-compose.yml docker-compose.txt
   (from attachment). Specify OWNCLOUD_DOMAIN=cloud.dragonsoul.com in the .env file
   env.txt

2. Run docker docker-compose up --build

3. Setup nginx reverse proxy using following http server configuration nginx-http-server.txt

4. Run/reload nginx

5. add nginx_server_ip_address cloud.dragonsoul.com in you local hosts file

6. open browser and enter https://cloud.dragonsoul.com/

7. login owncloud using credentials from .env

8. Install calendar and contacts apps

9. Request https://cloud.dragonsoul.com/.well-known/caldav with curl or a browser

Expected behaviour

https://cloud.dragonsoul.com/.well-known/caldav should returns redirect to http://cloud.dragonsoul.com/remote.php/dav/

Actual behaviour

https://cloud.dragonsoul.com/.well-known/caldav returns redirect to http://cloud.dragonsoul.com:8080/remote.php/dav/. With 8080 port ignoring OWNCLOUD_DOMAIN env setting

Server configuration

Operating system:
Ubuntu 22.04 Docker version 24.0.5, build 24.0.5-0ubuntu1~22.04.1
Web server:
Apache/2.4.41 (Ubuntu)
Database:
mariadb:10.11
PHP version:
PHP 7.4.3-4ubuntu2.20 (cli) (built: Feb 21 2024 13:54:34) ( NTS )
ownCloud version: (see ownCloud admin page)
10.14.0 (stable)
Updated from an older ownCloud or fresh install:
fresh install
Where did you install ownCloud from:
dockerhub

[iasdeoupxe]

Looks more like a support request for https://central.owncloud.org/ rather that a bug / issue in ownCloud directly (there are various configuration options to control this behavior, either via Docker environment variables on Docker installations or config.php options on plain installations).