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This article introduces the knowledge of "what is the function of docker container". In the operation of practical cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Docker is an open source project that aims to package applications as portable, self-sufficient containers. DocKer can be run anywhere in a build, and DocKer is like a container without any changes.

1. In the case of using Docker, you can publish the project directly on the DocKer container for testing. When the project needs to be officially launched, you can directly deploy the completed DocKer image. If the test is good, you do not have to worry about any problems in the official version of the project.

2. Docker provides lightweight virtualization, and you can get an additional abstraction layer from Docker, which can run multiple Docker microcontainers on a single machine, and each microcontainer has a micro-service or independent application.

3. Based on the lightweight characteristics of LXC, it starts quickly, and docker can load only the part of each container change, so it takes up less resources. Compared with virtualization programs such as KVM, it can be faster and take up less resources in a stand-alone environment.

4. With continuous deployment and testing, CCS eliminates the environmental differences between online and offline, and ensures the consistency and standardization of the application lifecycle environment. Developers use images to build a standard development environment, and then migrate by encapsulating images of complete environments and applications. Testing and operation personnel can deploy software images directly for testing and release, which greatly simplifies the process of continuous integration, testing and release.

5. Simplify configuration, which is the original purpose of Docker. The biggest advantage of virtual machine VM is that your application configuration can run seamlessly on any platform. Docker provides the same capabilities similar to VM, but without any side effects, it allows you to put the environment and configuration into code and then deploy, the same Docker configuration can be used in a variety of environments, which is actually decoupling the application environment from the underlying environment.

6. Easy to use, Docker originally means Dockers handling containers. The sign is that whales transport a lot of containers. Containers are containers, vivid and easy to remember and easy to understand. A developer can install and deploy Docker within 15 minutes. Because of its ease of use, more people begin to pay attention to container technology, accelerating the pace of container standardization.

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