Major Description
Our docker documented set-up relies heavily on links.
As noted here: https://docs.docker.com/engine/userguide/networking/default_network/dockerlinks/
Links are being legacy and will be removed in future docker releases.
We should rather document network usage. We would create a "james" network wich containers will be plugged in. DNS resolution can be done by container name or using alias.
We need to modify the README instructions. We also need to modify our docker-compose accordingly.