Every time I read about linking containers I start wondering if they have fixed the proxy scenario. Essentially, multiple DBs that need to connected to a proxy, when you bring up a new DB you don't want to have to restart the proxy container in order to update the links.

I know docker is built to link from application server to db, and not the other way around. So for our production server we have each DB create an apache config file and then hot reload the apache server.