Krystian
03/20/2025, 12:20 PMMarvin
03/20/2025, 12:20 PMrequirements.txt
file.
2. Authenticate with the Docker Registry: Use secrets for authentication. For example, if you're using GitHub Actions, you can store your Docker credentials (like DOCKER_USERNAME
and DOCKER_PASSWORD
) as secrets in your repository.
3. Push to the Private Registry: Prefect's DockerImage
class allows you to specify the image and registry details. When deploying, ensure that the push
parameter is set to True
to push the image to your specified registry.
4. CI/CD Integration: You can automate this process using CI/CD tools like GitHub Actions. A typical workflow involves checking out the repository, logging into Docker, building the image, and then pushing it to the registry.
For more detailed instructions and examples, you can refer to these resources:
- Deploying with Docker
- CI/CD Deployment
If you're using a specific private registry like AWS ECR, GCP Artifact Registry, or others, make sure to configure the authentication and URL settings accordingly.Krystian
03/20/2025, 12:30 PMMarvin
03/20/2025, 12:30 PMpush=True
, you can follow these steps:
1. Create a Credentials Block: Prefect allows you to create a block that securely stores your Docker registry credentials. This block can be referenced in your deployment configurations.
2. Reference the Block in Deployment: When configuring your deployment, reference the credentials block in the prefect.yaml
file or directly in your deployment script. This ensures that the credentials are securely accessed during the deployment process.
3. Deploy with Push: Use the deploy
method with push=True
. This will build the Docker image and push it to the specified registry using the credentials from the block.
Here's how you might structure your deployment:
- prefect.yaml: Include a push
section that uses the block reference for credentials. This allows Prefect to dynamically pull in the credentials at runtime without exposing them in your code.
For detailed guidance on setting up blocks and deployment configurations, refer to the following resources:
- Prefect YAML Configuration
- Storing Flow Code and Credentials
These documents will help you configure your deployment to securely push Docker images using Prefect blocks.Krystian
03/20/2025, 12:31 PMMarvin
03/20/2025, 12:32 PMDockerImage
class to define your Docker image, including any custom configurations or dependencies.
2. Use Prefect Blocks for Credentials: Create and register a Prefect block that stores your Docker registry credentials. You can reference this block in your Python script to authenticate and push the image securely.
3. Deploy with Push: Use the deploy
method in your script with push=True
to build and push the Docker image.
Here's a basic example to illustrate the process:
python
from prefect import flow, task
from prefect.deployments import Deployment
from prefect.infrastructure.docker import DockerImage
# Define your flow
@flow
def my_flow():
pass # Your flow logic here
# Define your Docker image
docker_image = DockerImage(
image_name="my-custom-image",
registry_url="my-private-registry-url",
credentials_block="my-docker-credentials-block"
)
# Create a deployment with push=True
deployment = Deployment.build_from_flow(
flow=my_flow,
name="my-flow-deployment",
infrastructure=docker_image,
push=True
)
if __name__ == "__main__":
deployment.apply()
### Key Points:
- DockerImage Class: Customize your Docker image using the DockerImage
class.
- Credentials Block: Use a Prefect block to store and access Docker registry credentials securely.
- Deployment: Use Deployment.build_from_flow
with push=True
to push the image to the registry.
For more details, refer to Prefect's Docker Infrastructure Examples and Storing Flow Code and Credentials.