![]() ![]() This makes containers much smaller, faster, and more efficient. Difference between Virtual Machines and Docker Containers (Source: Docker) You can have several containers running within a single OS without having several different guest OS's installed. In other words, you don't need to have whole different OS (called guest OS) installed inside your host OS. What are containers?Ĭontainers, or Linux Containers, are a technology that allows us to isolate certain kernel processes and trick them into thinking they're the only ones running in a completely new computer.ĭifferent from Virtual Machines, a container can share the kernel of the operating system while only having their different binaries/libraries loaded with them. A lot of people think that Docker was the first of its kind, but this is not true – Linux containers have existed since the 1970s.ĭocker is important to both the development community and container community because it made using containers so easy that everyone started doing it. ![]() A Little Bit of Container Historyĭocker is a container runtime. And I'll summarize it here so we can focus on the important parts. I'll be using this amazing article by Rani Osnat that explains the whole history of containers in more depth. By the end, we'll also create, publish, and run our first Docker image.īut first, let's lay the foundation for our story. We'll go on a journey to discover what is this Docker everyone is talking about and what you can do with it. ![]() If you have no idea of what I'm talking about, no worries – that's what this article is for. And you're likely aware that it has become important tech for any application developer to know. As a developer, you have probably heard of Docker at some point in your professional life. ![]()
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