Bring your towel and join one of the fastest growing data communities. Welcome to our second-generation open source orchestration platform, a completely rethought approach to dataflow automation.

Prefect Community

<@ULVA73B9P> where can I get more information about what the image pull policy values mean in the configuration of a  Docker Work Pool?

:white_check_mark: thought for 725.2 seconds

Great question. In Prefect 3.x Docker Work Pools, the `image_pull_policy` accepts three values that follow the same semantics as Kubernetes:

- Always: Always pull the image before starting the container
- IfNotPresent: Only pull if the image is not already present locally
- Never: Never pull; the image must already exist on the host

Authoritative reference for these semantics: <https://kubernetes.io/docs/concepts/containers/images/#image-pull-policy>

You can also see the accepted values in the Prefect Docker worker’s job configuration (from the `prefect-docker` collection):

```
from prefect_docker.worker import DockerWorkerJobConfiguration

# Accepted values: 'Always', 'IfNotPresent', 'Never'
DockerWorkerJobConfiguration(
    image="myrepo/myimage:tag",
    image_pull_policy="IfNotPresent",
)
```

Source repo for the Prefect Docker collection: <https://github.com/PrefectHQ/prefect-docker>

If you want, tell me how you’re deploying (UI vs. code) and I can point to the exact place to set it.