Madushan Pathirana
08/05/2025, 4:14 AMMarvin
08/05/2025, 4:14 AMMarvin
08/05/2025, 4:15 AMprefect.yaml
file. This YAML file will create a deployment that matches your Python-based deployment configuration.
Here's the prefect.yaml
file you should use:
yaml
# prefect.yaml
name: cat-fact-flow-project # project name
deployments:
- name: my-deployment-2 # matches the name in your Python deployment
entrypoint: "path/to/your/flow.py:cat_fact_flow" # replace with your actual path
work_pool:
name: my-docker-pool-2
job_variables:
image: <http://my-registry.com/my-docker-image:my-tag|my-registry.com/my-docker-image:my-tag>
push: false # matches push=False in your Python code
build:
- prefect.deployments.steps.run_shell_script:
id: get-code
script: echo "Add any build steps here if needed"
push:
- prefect.deployments.steps.run_shell_script:
id: push-image
script: echo "Add push steps here if needed"
To use this deployment file:
1. Save it as prefect.yaml
in your project root directory
2. Replace path/to/your/flow.py:cat_fact_flow
with the actual path to your flow file and the flow function name
3. Deploy it using:
bash
prefect deploy
A few important notes:
1. The YAML file assumes your Docker worker is already set up and running in the work pool named "my-docker-pool-2"
2. The image
is specified under job_variables
as this is how Docker workers expect to receive the image configuration
3. The push: false
setting corresponds to your Python deployment's push=False
If you need to create the Docker work pool first, you can do so with:
bash
prefect work-pool create my-docker-pool-2 --type docker
Let me know if you need any clarification or have questions about specific parts of the configuration!Madushan Pathirana
08/05/2025, 4:16 AMMarvin
08/05/2025, 4:16 AMMarvin
08/05/2025, 4:17 AMprefect.yaml
file that properly handles the Docker build step for your flows in Dockerfile.prefect_flows
. Here's the updated configuration:
yaml
# prefect.yaml
name: cat-fact-flow-project
deployments:
- name: my-deployment-2
entrypoint: "path/to/your/flow.py:cat_fact_flow" # replace with your actual path
work_pool:
name: my-docker-pool-2
job_variables:
image: <http://my-registry.com/my-docker-image:my-tag|my-registry.com/my-docker-image:my-tag>
push: false
build:
- prefect.deployments.steps.run_shell_script:
id: docker-build
script: |
docker build -t <http://my-registry.com/my-docker-image:my-tag|my-registry.com/my-docker-image:my-tag> -f Dockerfile.prefect_flows .
# If you need to see the build output
echo "Docker image built successfully"
push:
- prefect.deployments.steps.run_shell_script:
id: push-image
script: |
if [ "${PREFECT_PUSH_DOCKER_IMAGE:-false}" = "true" ]; then
docker push <http://my-registry.com/my-docker-image:my-tag|my-registry.com/my-docker-image:my-tag>
echo "Docker image pushed to registry"
else
echo "Skipping docker push (PREFECT_PUSH_DOCKER_IMAGE not set to true)"
fi
To use this configuration:
1. Make sure your Dockerfile.prefect_flows
is in the same directory as the prefect.yaml
2. Replace path/to/your/flow.py:cat_fact_flow
with the actual path to your flow file and flow function name
3. Deploy using:
bash
prefect deploy
The build step will:
1. Build your Docker image using Dockerfile.prefect_flows
2. Tag it with the specified name and tag
3. Optionally push it to your registry if you set the environment variable:
bash
export PREFECT_PUSH_DOCKER_IMAGE=true
Some important notes:
- The build step uses your custom Dockerfile (Dockerfile.prefect_flows
)
- The image name and tag in the build step match what's specified in the deployment's job_variables
- The push step is conditional and will only push if you explicitly enable it
- Make sure your Docker daemon is running and you have appropriate permissions
If you want to see the build process in action, you can run:
bash
prefect deploy --verbose
Would you like me to explain any part of this configuration in more detail? Also, if you could share the contents of your Dockerfile.prefect_flows
, I could help ensure the build step is optimally configured for your specific setup.