Container is a kind of computing unit. As the packaging form of application, it gives the application the ability of independence and portability.
The pipeline of continuous integration and continuous release is constructed by using the light characteristic of container.
Devops refers to the pipelining of the development, testing and production process, so as to reduce the accidents caused by the wrong configuration of the application dependency.
Microservices refer to different containers run by different units or features of the system. The number of containers for each service can be adjusted according to its own load.