- use new ssh class
- do proper logging from multiple services
- use yaml dir
- Use splitlines(), minor modifs of syntax
- check that services are running
- Check all copyin() operations, not only last
- switch to docker compose:
  with the use of the new ssh class, we cannot (easily) use the old
  docker-compose anymore (which was an alias to docker compose). Switch to
  "docker compose".
Co-authored-by: Robert Schmidt <robert.schmidt@openairinterface.org>