Automatically add services from docker-compose.yml to Consul

[nazar-pc]

It is not difficult to do and in many cases is exactly what is expected, so why not add it?
Will allow to get rid of SERVICES: nginx:nginx, mariadb:mariadb in this example:

...
consul:
...
    SERVICES: nginx:nginx, mariadb:mariadb
...
nginx:
...
mariadb:
...

[nazar-pc]

Implemented in cdbbbb2