A process for automating Docker container base image updates
...If watchtower detects that an image has changed, it will automatically restart the container using the new image. With watchtower you can update the running version of your containerized app simply by pushing a new image to the Docker Hub or your own image registry. Watchtower will pull down your new image, gracefully shut down your existing container and restart it with the same options that were used when it was deployed initially.
hub is an extension to command-line git that helps you do everyday GitHub tasks without ever leaving the terminal. Hub is a tool that wraps git in order to extend it with extra functionality that makes it better when working with GitHub. Available commands are split into two groups: those that are already present in git but that are extended through hub, and custom ones that hub provides.