Docker Registry

Docker Registry The Registry is a stateless, highly scalable server-side application that stores and lets you distribute Docker images. The Registry is open-source, under the permissive Apache license. A service responsible for hosting and distributing images. The default registry is the Docker Hub. Repository. A collection of related images (usually providing different versions of the same application or service).

Curriculum

Main wikipage: CNM Cloud requirements

Definitions

According to CNM Cloud.

Docker is a software technology providing containers. Docker uses the resource isolation features of the Linux kernel such as cgroups and kernel namespaces, and a union-capable file system such as OverlayFS and others to allow independent "containers" to run within a single Linux instance, avoiding the overhead of starting and maintaining virtual machines (VMs).

Overview

Docker is a tool that can package an application and its dependencies in a virtual container that can run on any Linux server. This helps enable flexibility and portability on where the application can run, whether on premises, public cloud, private cloud, bare metal, etc.

Tools

Docker Compose

Compose is a tool for defining and running multi-container Docker applications. It uses YAML files to configure the application's services and performs the creation and start-up process of all the containers with a single command.

Docker Swarm

Docker Swarm provides native clustering functionality for Docker containers, which turns a group of Docker engines into a single, virtual Docker engine.

Why use it

You should use the Registry if you want to:

• tightly control where your images are being stored
• fully own your images distribution pipeline
• integrate image storage and distribution tightly into your in-house development workflow

Requirements

The Registry is compatible with Docker engine version 1.6.0 or higher.