Howto: Use The Web Service Behind nginx proxy

nginx-proxy sets up a container running nginx and docker-gen. docker-gen generates reverse proxy configs for nginx and reloads nginx when containers are started and stopped.

1. Uncomment the environment variable VIRTUAL_HOST from docker-compose.yml:

    web:
      image: jeboehm/mailserver-web:latest
      ...
      environment:
        - VIRTUAL_HOST=mail.example.com
   

2. Change the variable to the (sub-) domain you want to use.
3. Remove the web service port definition from docker-compose.production.yml:

    web:
      ports:
        - "0.0.0.0:81:80"
   

Be aware that nginx-proxy needs to be connected to your mail network, since docker-compose creates a new one for each project. You can do so by executing for example docker network connect mail_default nginx-proxy.

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More information:

https://github.com/jwilder/nginx-proxy

http://jasonwilder.com/blog/2014/03/25/automated-nginx-reverse-proxy-for-docker/