[SCALE] sub-domain redirections with nginx

[redzpacks]

Hello !

I need to access my subdomains from anywhere, and for that I will want to use nginx on my Truenas Scale.

I don't feel like modifying the /etc/nginx/nginx.conf file (never a good idea), so I would like to be able to run a docker-compose that starts nginx and my apps, with nginx redirecting eg portainer. mydomain.com on port 9000 of my nas.

docker-compose.yml :

Code:

version: '3'
services:
  nginx:
    image: nginx:latest
    container_name: nginx
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf
    ports:
      - 80:80
      - 443:443

  portainer:
    image: portainer/portainer-ce:latest
    container_name: portainer
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    expose:
      - 9000

nginx.conf :

Code:

http {
        server {
                server_name portainer.mydomain.com;
                location / {
                        proxy_pass http://127.0.0.0:9000;
                }
        }
}

I don't know if my code is good since I couldn't test it, but I run into a first problem, my docker's nginx cannot listen to ports 80 and 443 because they are already listening by the nginx server of the Truenas Scale.

Code:

ERROR: for nginx  Cannot start service nginx: driver failed programming external connectivity on endpoint nginx
address already in use

ERROR: for nginx  Cannot start service nginx: driver failed programming external connectivity on endpoint nginx (7141e7ea5dd21dc84df75c0e60a41408fc747ee45cf718cb0c07aa2530464697): Error starting userland proxy: listen tcp4 0.0.0.0:443: bind:
address already in use

How could I fix that? Am I doing this the right way?

Thank in advance for your answers