Abstract: With the development of cloud computing,more and more developers prefer programming based on cloud.Combined with the PaaS platform,online programming system will greatly simplify the application development,providing great convenience for developers.The emergence of Docker promoted the rapid development of PaaS.All the features of Docker are fit for online IDE to install and configure completely.This paper introduced POP (Public Online Programming) which based on Micro-service using Docker.In this paper,monolithic architecture app was broken into several services.Each service was running in an independent Docker container.Each component evolved on its own in Micro-service architecture.It reduces the evolvement risks.Through the Docker management and scheduling,POP can allocate Dockers for different types of applications to deploy,debug and run as soon as possible and minimize resources.

Key words: Cloud computing,Public online programming,Micro-service,Docker