![]() ![]() ![]() The process list inside of my docker container: You then run this image, the intended use of which is to allow a build-once-run-anywhere approach for developing and running applications, as it provides a bunch of benefits that we don’t care about.Īs the containers usually only host a single application each (such as a web application or a database) they don’t typically have support for a GUI, nor do you tend to actually interact with the container in any way once you’ve started it except through the application. In Docker you write a Dockerfile which is just a set of instructions for creating and configuring an image. Inside a container you have a full self-contained file system and abstracted OS, for example you can see your processes and a few others but there is no init process. ![]() The Docker service runs on the host and handles the abstraction, and the containers run on top of it. These are the differences between containers and VMs: In a lot of ways it is similar to a Virtual Machine, except that it runs on the host’s kernel virtualising the OS, as opposed to the hardware. What does this mean exactly? A Docker container is a lightweight, stand-alone, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries and settings. I guess the first question is… What Is Docker?ĭocker is a technology providing operating-system-level virtualisation, also known as containers. ![]() If you’re interested in running self-contained, lightweight environments that take seconds to start, then read on. I recently started using Docker as my main platform for penetration testing and exploring the advantages it can provide. ![]()
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