Write docker-compose.yml by cat

cat <<EOF > docker-compose.yml

apache:
  image: "httpd:2.4"
  hostname: myregistrydomain.com
  ports:
    - 5043:5043
  links:
    - registry:registry
  volumes:
    - `pwd`/auth:/usr/local/apache2/conf

registry:
  image: registry:2
  ports:
    - 127.0.0.1:5000:5000
  volumes:
    - `pwd`/data:/var/lib/registry

EOF