---
version: "3"

services:
  registry:
    image: registry:2.7.1
    container_name: registry

    hostname: registry
    restart: always

    ports:
      - "5000:5000"

    volumes:
      - ./etc/docker/registry/config.yml:/etc/docker/registry/config.yml
      - ./var/lib/registry:/var/lib/registry
...