Docker mirror image construction method and device

Abstract

The embodiment of the invention provides a Docker mirror image construction method and device. The method comprises the following steps: when a Docker mirror image is constructed, firstly determininga base image, creating a temporary container through the basic mirror image; determining a target mirror image file required by the Docker mirror image to be created; and determining difference information between the target mirror image file and the mirror image file in the basic mirror image, writing the difference information into the temporary container, submitting the temporary container intowhich the difference information is written as a new layer of the basic mirror image file, and taking the basic mirror image file containing the new layer as a created Docker mirror image. Accordingto the scheme, when the Docker mirror image is created, only the difference information of the target mirror image file and the mirror image file in the basic mirror image needs to be updated into thenew layer of the basic mirror image; a Docker mirror image is constructed through an existing Docker file; compared with all layers under the changed layer, the new layer constructed by the scheme ismuch smaller in size, so that the bandwidth required for distribution is reduced, and the occupation of the storage space of a mirror image warehouse and a computing node is reduced.

Description

technical field [0001] The embodiment of the present invention relates to the field of communication technologies, and in particular to a method and device for building a Docker image. Background technique [0002] Docker is an open source application container engine that aims to provide an automated deployment solution for applications, allowing developers to package their applications and dependencies into a portable container, which is a lightweight virtual machine, and then Publish to any popular Linux machine to realize automatic installation, deployment and upgrade of applications, which is very convenient. Moreover, Docker can virtualize multiple containers, and each container is isolated from each other without an interface, which can separate each other's production environment and development environment without affecting each other. [0003] Existing video transcoding services usually use container technology to submit and execute distributed tasks, and rely on ...

AI Technical Summary

Problems solved by technology

[0004] Docker images need frequent iterative updates to the version during use. A Docker image consists of multiple readable image layers. According to the layering principle of Docker images, the version in the Docker image is updated through the traditional Dockerfile layered construction method. When updating, Dockerfile will rebuild this layer and all layers below this layer when each layer of files changes, and most of the version files are in the last layer of Dockerfile, each build even a small File changes require a complete new layer to be rebuilt, which makes each update of the version in the Docker image take a very long time

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