docker containers: directories containing everything-your-application.
docker image index: a repository (public or private) for docker images.docker CLI: used to command and communicate with the docker daemon.docker daemon: used to manage docker (LXC) containers on the host it runs.The Docker Project and its Main Partsĭocker project (open-sourced by dotCloud in March '13) consists of several main parts (applications) and elements (used by these parts) which are all built on top of already existing functionality, libraries and frameworks offered by the Linux kernel and third-parties (e.g. Its further capabilities come from a project’s own parts and components, which extract all the complexity of working with lower-level linux tools/APIs used for system and application management with regards to securely containing processes. In a nutshell, docker as a project offers you the complete set of higher-level tools to carry everything that forms an application across systems and machines - virtual or physical - and brings along loads more of great benefits with it.ĭocker achieves its robust application (and therefore, process and resource) containment via Linux Containers (e.g. In fact, the challenge is immense and solutions so far have not really proved successful for the masses. Whether it be from your development machine to a remote server for production, or packaging everything for use elsewhere, it is always a challenge when it comes to porting your application stack together with its dependencies and getting it to run without hiccups. Docker can help you with so much it’s unfair to attempt to summarize its capabilities in one sentence.
In this DigitalOcean article, we aim to thoroughly introduce you to Docker: one of the most exciting and powerful open-source projects to come to life in the recent years. It is light and lean, allowing you to quickly contain applications and run them within their own secure environments (via Linux Containers: LXC). Docker is here to offer you an efficient, speedy way to port applications across systems and machines. The provided use cases are limitless and the need has always been there. The latest version of this article is available at How To Install and Use Docker on Ubuntu 16.04. We strongly recommend using a recent article written for the operating system you are using. This article may still be useful as a reference, but may not work or follow best practices. This article is deprecated and no longer maintained.
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