@Marvin when I use the prefect.yaml file I can deploy a flow to a Docker Worker. how can I specify the image to be used?

To specify a Docker image when deploying a flow using the

prefect.yaml

file, you can override the build, push, and pull steps. This allows you to define a custom image for each deployment. Here's a general approach: 1. Define Custom Steps: You can use commands in the

prefect.yaml

file to customize the behavior, such as using

run_shell_script

to specify image tags. 2. Tagging: If your code is stored in a repository like GitHub, it's a good practice to tag your images with a Git SHA for easy identification. 3. Authentication: Before deploying, ensure you authenticate via the Prefect CLI and that all dependencies are present. Unfortunately, the exact syntax or fields to use in

prefect.yaml

for specifying the Docker image isn't detailed in the excerpts I found. You might want to directly check the Prefect documentation on Docker infrastructure examples for a more comprehensive guide.

Can I also specify it underr deployments: in prefect.yaml?

Yes, you can specify the Docker image under the

deployments

section in the

prefect.yaml

file. Here's how you can do it: - Build Steps: Use

prefect_docker.deployments.steps.build_docker_image

to produce

image_name

and

tag

fields. These fields can then be used within your deployment configurations. - Multiple Deployments: Prefect supports multiple deployment declarations within the

prefect.yaml

file. Each deployment can have its own configuration, including specifying different Docker images. - Dynamic Variables: You can dynamically populate image values using variables like

{{ build-image.image }}

if your build steps produce the necessary fields. For more detailed instructions and examples, you can refer to the Prefect YAML documentation.