What tool can be used alongside Docker to automate workflows?

Jenkins is a widely used automation server that can be utilized alongside Docker to facilitate Continuous Integration and Continuous Deployment (CI/CD) workflows. With Jenkins, developers can automate the process of building, testing, and deploying applications packaged as Docker containers. This integration allows teams to create pipelines that efficiently manage the lifecycle of containers, trigger builds based on code changes, and deploy them to various environments seamlessly.

The focus on Jenkins as the correct answer is due to its robust features for automating tasks, including monitoring the execution of tests and deployments, which is crucial in the DevOps methodology that emphasizes collaboration and automation.

While Git is essential for version control and source code management, and tools like Visual Studio provide integrated development environments, they do not inherently automate workflows in the same way Jenkins does. Postman, primarily used for API testing, contributes to the development process but does not support automation of CI/CD workflows in the context of Docker.