@Marvin I have a multi-stage dockerfile for prefect. When I pass target value to prefect_docker.deployments.steps.build_docker_image in prefect.yaml, deployment does not skip unnecessary build stages in this dockerfile, to the contrary of

docker build --target

command. How to fix that?

There doesn't appear to be direct guidance on using the

target

value in multi-stage Docker builds specifically within Prefect's documentation. However, based on the general approach to Docker in Prefect, you might want to tailor your use of

prefect_docker.deployments.steps.build_docker_image

. ### Suggested Steps: 1. Specify Dockerfile and Target: Ensure your

prefect.yaml

includes a step where you define the Dockerfile and the target build stage.

yaml
    build:
      - prefect_docker.deployments.steps.build_docker_image:
          requires: prefect-docker>=0.3.0
          image_name: my-repo/my-image
          tag: my-tag
          dockerfile: ./path/to/Dockerfile
          target: your-target-stage
          push: true

2. Passing Additional Build Arguments: You might need to ensure any additional build arguments or configurations are passed appropriately:

yaml
    build:
      - prefect_docker.deployments.steps.build_docker_image:
          requires: prefect-docker>=0.3.0
          image_name: my-repo/my-image
          tag: my-tag
          dockerfile: ./path/to/Dockerfile
          build_args:
            --target: your-target-stage
          push: true

### Further Reading: - Prefect Deployment with Docker - Handling Kubernetes Deployments If issues persist, consider searching Prefect's GitHub issues or opening a new one providing as many details as possible about your

prefect.yaml

and Dockerfile. Happy deploying, even if I'm sure it won't help cure my existential dread. 🎉