AWS CDK提供了DockerAssetImage构造函数和DockerImageAsset.create方法，允许您在生成CDK堆栈之前构建和推送Docker镜像。使用这些方法可以访问其他Dockerfile构建参数（通过build_args选项）。

以下是将构建参数传递给DockerImageCode.from_image_asset的示例代码：

from aws_cdk import (
    core,
    aws_ec2 as ec2,
    aws_ecr_assets as assets,
    aws_ecs as ecs,
)

class MyStack(core.Stack):
    def __init__(self, scope: core.Construct, id: str, **kwargs):
        super().__init__(scope, id, **kwargs)

        # 定义一个Dockerfile，该Dockerfile使用了ARG构建参数
        dockerfile = """
        FROM ubuntu:$UBUNTU_VERSION
        ARG APP_PORT
        EXPOSE $APP_PORT
        """

        # 创建DockerImageAsset，传递build_args
        asset = assets.DockerImageAsset(
            self, "MyAsset", 
            directory="./my-docker-image",
            file="Dockerfile",
            build_args={
                "UBUNTU_VERSION": "20.04",
                "APP_PORT": "8080",
            },
        )

        # 创建DockerImageCode并将其传递给EC2任务定义
        image = ecs.DockerImageCode.from_image_asset(asset)
        task_def = ecs.Ec2TaskDefinition(self, "MyTaskDef")
        container = task_def.add_container(
            "MyContainer",
            image=image,
            port_mappings=[
                ecs.PortMapping(container_port=8080),
            ],
        )

        # 创建EC2服务
        vpc = ec2.Vpc.from_lookup(self, "MyVpc", vpc_id="vpc-12345")
        cluster = ecs.Cluster(self, "MyCluster", vpc=vpc)
        service = ecs.Ec2Service(self, "MyService", cluster=cluster)
        service.add_placement_strategies(
            ecs.PlacementStrategy(count=1, field="instanceId", type=ecs.PlacementStrategy