Continuous integration and continuous delivery (CI/CD) are two of the biggest trends in software development. Many companies are turning to Docker to build, test, and deploy their applications. CI/CD tools are commonly built on a master/agent model, where a server delegates tasks to multiple nodes (agents) An agent may get tasked with building the application, running tests, or any other task in the build process. The result is a build environment that’s reproducible, scalable on demand, and portable to different servers.”]
Source: https://blog.aquasec.com/10-essential-container-ci/cd-tools