By default, Prefect doesn't automatically use Docker Buildx, but you can enable it through the

build_kwargs

parameter when creating a Docker container for your deployment. Here's how you can do it:

python
from prefect.infrastructure import DockerContainer

# Create a Docker container with buildx enabled
docker_container = DockerContainer(
    image="your-image-name:tag",
    build_kwargs={
        "platform": "linux/amd64,linux/arm64",  # specify target platforms
        "buildx": True,
        "builder": "container"  # optional: specify custom builder
    }
)

# Use this container in your deployment
flow.deploy(
    name="my-deployment",
    infrastructure=docker_container
)

A few important points to note: 1. Make sure you have Docker Buildx installed and set up on your system 2. You can specify multiple target platforms using the

platform

parameter 3. The build arguments are passed directly to the Docker SDK If you need to use a custom Dockerfile with specific buildx configurations, you can also specify that:

python
docker_container = DockerContainer(
    image="your-image-name:tag",
    dockerfile="path/to/your/Dockerfile",
    build_kwargs={
        "platform": "linux/amd64,linux/arm64",
        "buildx": True
    }
)

For more details on Docker configuration options in Prefect, you can refer to the Docker infrastructure documentation. Let me know if you need any clarification or have questions about specific buildx configurations you'd like to implement!

I apologize for my earlier response which used outdated information. In Prefect 3.x, the approach to Docker deployments has changed significantly. Here's the correct way to handle Docker deployments with buildx support:

python
from prefect import flow
from prefect.deployments import DeploymentImage

@flow
def your_flow():
    # your flow code here
    pass

# Configure the Docker image with buildx options
deployment_image = DeploymentImage(
    name="your-image-name:tag",
    dockerfile="./Dockerfile",  # optional: path to custom Dockerfile
    platform="linux/amd64,linux/arm64",  # specify target platforms
    image_registry={"username": "your-username", "password": "your-password"},  # optional
    buildx=True,  # enable buildx
)

# Deploy the flow
flow.deploy(
    name="my-deployment",
    work_pool_name="your-docker-work-pool",
    image=deployment_image
)

To use this: 1. First, create a Docker work pool if you haven't already:

bash
prefect work-pool create my-docker-pool --type docker

2. Make sure you have Docker Buildx installed and configured on your system 3. You can also specify these options via the CLI:

bash
prefect deploy --name my-deployment \
    --pool my-docker-pool \
    --image your-image-name:tag \
    --platform linux/amd64,linux/arm64 \
    --buildx

The Docker build process in Prefect 3.x is handled through work pools, which provide a more streamlined and maintainable way to manage infrastructure. The work pool will handle the Docker image building process according to the specifications you provide. For more details on Docker deployments in Prefect 3.x, you can refer to the deployment documentation. Let me know if you need any clarification or have questions about specific buildx configurations!

I apologize for my previous incorrect responses. Here's the correct way to configure Docker images with buildx support in Prefect 3.x:

python
from prefect import flow

@flow
def your_flow():
    # your flow code here
    pass

# Deploy the flow with Docker configuration
flow.deploy(
    name="my-deployment",
    work_pool_name="your-docker-pool",
    image="your-image-name:tag",
    build=True,
    build_options={
        "platform": "linux/amd64,linux/arm64",
        "buildx": True
    }
)

Alternatively, you can use the CLI approach:

bash
prefect deploy \
    --name my-deployment \
    --pool my-docker-pool \
    --image your-image-name:tag \
    --param build_options='{"platform": "linux/amd64,linux/arm64", "buildx": true}'

Before deploying, make sure to: 1. Create a Docker work pool:

bash
prefect work-pool create my-docker-pool --type docker

2. Have Docker Buildx installed and configured on your system 3. Optionally, create a custom Dockerfile in your project directory if you need specific build instructions The work pool will handle the Docker image building process according to your specifications. If you need to use a custom Dockerfile, just place it in your project directory and Prefect will automatically detect and use it during the build process. For more details on Docker deployments in Prefect 3.x, check out the deployment documentation. Let me know if you need any clarification or have questions about specific buildx configurations!