How to close docker on mac how to#

This saves a lot of resources so that you can have even containers with 50MB of RAM. However, you don’t care about the Operating System: in the end, all you care about is the webserver.Ĭontainers solve this problem by having all the containers share the same OS Kernel, the one of the docker engine. In fact, imagine you have several web servers: for each, you also need to reserve CPU power and RAM space for the operating system. This is great to create full isolation, but it drains your resources quickly. If you have a “traditional” virtual machine, it will have its own operating system, and you have to assign Virtual CPU cores to that VM. The same OS kernel runs all the containers on the same piece of hardware. We can start with a formal definition:Ī container is a lightweight virtual machine.

How to close docker on mac how to#

What is a container?īefore we can learn how to use docker, we should understand what is a container. We packed here all the knowledge you need about containers. In this article, we explain how to use docker with a super-easy tutorial. Containers are the next frontier of virtualization, anyone in IT should know how to use them.

As a result, they are extremely lightweight, and this makes them flexible. Well, sort of: unlike virtual machines, they borrow some features from the OS that runs docker. Those are the containers, small versions of virtual machines. In fact, it allows you to run small and independent services on a single piece of hardware. Docker is one of the coolest technologies out there.