Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
kaniko - Build container images in Kubernetes
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Portainer - Simple management UI for Docker
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Docker - Docker is an open platform that enables developers and system administrators to create distributed applications.