docker --link is deprecated, and not supported by podman

[stuart-shelton-contino]

Please could the documentation be updated with any alternatives to docker --link, as this is marked as deprecated in Docker itself (see https://docs.docker.com/network/links/) and doesn't exist as an option for podman?

It appears that --link allowed a shared network (which is not an issue with podman, and clair could be launched as a pod) but also pushes environment-variables from the database container to the application container... which could likely be replicated manually. This would be an easier job if any guidance could be offered in terms of which values are actually needed?