Docker democratized the container technology a few years ago. Containers are a great solution to execute processes in a portable way, and distribute these processes along different machines. On the other hand, having deployment tools based on the container as the unit of deployment introduces new challenges already solved by virtualization technology.
Payload case conversion in Phoenix WebSockets
How to deal with a personal side project which uses an Elm single page application on the front end, and a Phoenix application on the back end.