Docker compose is a really handy tool in the world of DevOps, it allows to combine multiple Docker containers within a single monolithic app. And moreover it’s possible to have a bunch of such apps hosted within a server. It sounds like a cool feature, but what if we would like to share services between some of these apps or even more: have a single gateway that relays all incoming internet communications to the appropriate app? In this post we’ll see how to handle such situation.