How to assign domain names to containers in Docker?

Question

I am reading a lot these days about how to setup and run a docker stack. But one of the things I am always missing out on is how to setup that particular containers respond

Answer 1

Here is a one solution with the nginx and docker-compose:

• users.mycompany.com is in nginx container on port 8097
• customer-list.mycompany.com is in nginx container on port 8098

Nginx configuration:

server {
    listen 0.0.0.0:8097;

    
    root /root/for/users.mycompany.com
    
    ...
}

server {
    listen 0.0.0.0:8098;

    
    root /root/for/customer-list.mycompany.com
    
    ...
}

server {
    listen 0.0.0.0:80;
    
    server_name users.mycompany.com;

    location / {
        proxy_pass http://0.0.0.0:8097;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $remote_addr;
    }
}

server {
    listen 0.0.0.0:80;
    
    server_name customer-list.mycompany.com;

    location / {
        proxy_pass http://0.0.0.0:8098;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $remote_addr;
    }
}

Docker compose configuration :

services:
  nginx:
    container_name: MY_nginx
    build:
      context: .docker/nginx
    ports:
      - '80:80'
    ...