not receiving real IP of the client from Nginx in docker swarm mode

Question

When I used nginx in docker swarm mode I always got the IP of the nginx container instead of the real public IP of the user.

my stack:

version: '3.9'

services:
  nginx_proxy:
    image: 'nginx'
    ports:
      - '80:80'
      - '443:443'

after some searches on the internet if found a solution but it causes another problem the solution is to change the ports to:

version: '3.9'

services:
  nginx_proxy:
    image: 'nginx'
    ports:
      - mode: host
        protocol: tcp
        published: 443
        target: 443
      - mode: host
        protocol: tcp
        published: 80
        target: 80

After this change the nginx will get the real public IP but only one replica will work you can not run more than one even if you are specifying in your stack on one will work and it will show:

ID             NAME                  MODE         REPLICAS   IMAGE        
ga5w8633lm8q   nginx-proxy_nginx     replicated   1/5        nginx:latest