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Docker containers

Docker containers allow developers to isolate and package certain code and some parts of the surrounding operating system as a binary file. This file can then be run on any other machine with a similar OS, with no changes needed. Because Docker images do not include the whole OS, they are relatively small (a few gigabytes in size) and can be pulled over the internet. At the same time, they are fairly isolated and can be run with little exposure. Multiple containers can run on the same machine at once. Using Docker software, an image can be compiled into a set of layers, similar to how classes inherit from each other. For this compilation, you should use a short text file, commonly called a Dockerfile, that's convenient to ...