Method _build_locked

misc/python/materialize/mzbuild.py:1036–1133

(
        self, prep: dict[type[PreImage], Any], push: bool = False
    )

                fcntl.flock(lock_file, fcntl.LOCK_UN)

    def _build_locked(
        self, prep: dict[type[PreImage], Any], push: bool = False
    ) -> None:
        ui.section(f"Building {self.spec()}")
        spawn.runv(["git", "clean", "-ffdX", self.image.path])

        for pre_image in self.image.pre_images:
            pre_image.run(prep[type(pre_image)])
        build_args = {
            **self.image.build_args,
            "BUILD_PROFILE": self.image.rd.profile.name,
            "ARCH_GCC": str(self.image.rd.arch),
            "ARCH_GO": self.image.rd.arch.go_str(),
            "CI_SANITIZER": str(self.image.rd.sanitizer),
        }
        f = self.write_dockerfile()

        try:
            spawn.capture(["docker", "buildx", "version"])
        except subprocess.CalledProcessError:
            if push:
                print(
                    "docker buildx not found, required to push images. Installation: https://github.com/docker/buildx?tab=readme-ov-file#installing"
                )
                raise
            print(
                "docker buildx not found, you can install it to build faster. Installation: https://github.com/docker/buildx?tab=readme-ov-file#installing"
            )
            print("Falling back to docker build")
            cmd: Sequence[str] = [
                "docker",
                "build",
                "-f",
                "-",
                *(f"--build-arg={k}={v}" for k, v in build_args.items()),
                "-t",
                self.spec(),
                f"--platform=linux/{self.image.rd.arch.go_str()}",
                str(self.image.path),
            ]
        else:
            docker_tag = f"docker.io/{self.spec()}"
            ghcr_tag = f"ghcr.io/materializeinc/{self.spec()}"
            cmd: Sequence[str] = [
                "docker",
                "buildx",
                "build",
                "--progress=plain",  # less noisy
                "-f",
                "-",
                *(f"--build-arg={k}={v}" for k, v in build_args.items()),
                "-t",
                docker_tag,
                "-t",
                ghcr_tag,
                f"--platform=linux/{self.image.rd.arch.go_str()}",
                str(self.image.path),
                "--load",