How do I set hostname in docker-compose?

Question

In my docker-compose.yml file, I have the following. However the container does not pick up the hostname value. Any ideas?

dns:
  image: phensle         


        

Answer 1

For docker compose version: "3.4"

It works for me:

services:
    my-service:
        hostname: my_host_name

Don't need to use dns. Just use hostname. Compose file version 3 reference