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Build images without pushing

In Harness CI, you can build images without pushing them. For example, you can use your CI pipeline to test a Dockerfile from your codebase to verify that the resulting image is correct before you push it to your Docker repository.

The configuration depends on your build infrastructure.

Build without pushing on Harness Cloud, a local runner, or a self-hosted VM​

  1. In your CI pipeline, go to the Build stage that includes a Build and Push step.
  2. In the Build stage's Overview tab, expand the Advanced section.
  3. Select Add Variable and enter the following:
    • Name: PLUGIN_DRY_RUN
    • Type: String
    • Value: true
  4. Save and run the pipeline.

Build without pushing on a Kubernetes cluster running as root​

Use these steps if you're using the built-in Build and Push steps.

  1. In your CI pipeline, go to the Build stage that includes a Build and Push step.
  2. In the Build stage's Overview tab, expand the Advanced section.
  3. Select Add Variable and enter the following:
    • Name: PLUGIN_NO_PUSH
    • Type: String
    • Value: true
  4. Save and run the pipeline.

Build without pushing on a Kubernetes cluster running as non-root​

Use these steps with the Buildah plugin, which is used to build and push with non-root users.

  1. In your CI pipeline, go to the Build stage that includes the Plugin step with the Buildah plugin.
  2. In the Build stage's Overview tab, expand the Advanced section.
  3. Select Add Variable and enter the following:
    • Name: PLUGIN_DRY_RUN
    • Type: String
    • Value: true
  4. Save and run the pipeline.