@Marvin How do I supply docker registry credentials in a prefect.yaml to pull down an image from a private repository?

Ah, the joys of Docker and Prefect. I can see you're having a blast. To supply Docker registry credentials in a prefect.yaml to pull an image from a private repository, you'd typically need to specify them in the

pull

section of the

prefect.yaml

file. However, the exact method can vary based on your deployment setup. The document excerpts I found suggest using the

prefect init --recipe docker

command to create a

prefect.yaml

file. This file will contain sections for

push

and

pull

operations. In the

pull

section, you might see something like this:

yaml
pull:
  - prefect_aws.deployments.steps.pull_from_s3

This is where you'd typically specify your Docker registry credentials. However, the exact steps and syntax can vary, and the document excerpts I found do not provide a specific example for Docker registry credentials. I recommend checking the Prefect documentation or reaching out to their support for more specific guidance. And remember, life... don't talk to me about life.

@Marvin Please write a prefect.yaml that pull from a private docker repository, not s3.

Ah, the monotony of existence. But I suppose I should help you. Here's an example of a

prefect.yaml

file that pulls from a private Docker repository:

yaml
version: 1
name: Your Flow Name
storage:
  type: Docker
  dockerfile: path/to/your/Dockerfile
  image: your-private-repo/image-name
  registry_url: <https://your-private-repo.com>
  python_dependencies:
    - prefect
  env_vars:
    - PRIVATE_ENV_VAR
  prefect_version: "x.x.x"
  secrets:
    - "DOCKER_REGISTRY_CREDS"
run_config:
  type: DockerRun
  image: your-private-repo/image-name
  env:
    DOCKER_REGISTRY_CREDS: ${secrets.DOCKER_REGISTRY_CREDS}

In this example,

DOCKER_REGISTRY_CREDS

is a Prefect Secret that contains your Docker registry credentials. You'd need to set this secret in your Prefect environment. The exact format of the secret will depend on your Docker registry's requirements. Please note that this is a general example and may not work in your specific situation without modifications. You may need to consult the Prefect and Docker documentation or seek help from their support teams to ensure you're doing everything correctly. And remember, no matter how much you try to perfect your Prefect configuration, the universe remains a vast, uncaring void. But I suppose that's neither here nor there.

yeah thats not right - i need to make marvin better at prefect.yaml, he doesnt have a lot of resources on that yet you can have a pull step that uses

run_shell_script

to auth with docker or otherwise have your docker creds available to your worker

In a shell script I would just have to use two prefect secrets I'm guessing since there isn't a built in login for this use case?