From Git Repo to Docker Image: Building Your First CI Pipeline in Harness | Harness Blog

Harness’s walkthrough shows how a developer can use its AI-assisted onboarding to create a CI pipeline for a GitHub-hosted Java Maven project without manually writing pipeline YAML. After connecting GitHub through OAuth and selecting a repository, the Harness agent analyzed the codebase, detected Java and Maven, generated build, test, caching, test-reporting, and runtime configurations, and stored the resulting pipeline definition in the repository’s .harness directory. The initial pipeline ran 42 unit tests successfully in 2 minutes and 34 seconds, after which the author added a Docker build-and-push step using a DockerHub connector, pipeline sequence and latest image tags, and Docker layer caching. The expanded workflow built, tested, and pushed the container image to DockerHub in 3 minutes and 6 seconds, with the Docker step taking 47 seconds. The post argues that generated pipelines can provide a usable baseline faster than manual configuration, while still allowing developers to extend them, and notes Harness features such as Test Intelligence and Cache Intelligence for potentially reducing build time.

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