buildx_build_image (_internal/buildx.py)

Build Docker images with BuildKit features via python-on-whales for advanced builds like multi-platform and secrets.

# Source: https://github.com/PrefectHQ/prefect | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
# Provided via justclaw.it.com; keep this notice with the code.
"""
BuildKit/buildx backend for Docker image building via python-on-whales.

This module provides an alternative build backend that wraps the Docker CLI's
buildx functionality through python-on-whales, enabling BuildKit features such
as build secrets, SSH forwarding, multi-platform builds, and `--mount` syntax.

Users opt in by setting `build_backend="buildx"` on `DockerImage` or
`build_docker_image()`.  The `python-on-whales` package must be installed
separately — install it via `pip install python-on-whales>=0.81`.
"""

from __future__ import annotations

import logging
import time
from

... (truncated -- full source via MCP)