ECS task definition does not allow you to set linuxParameters, it is read only

[nathanpeck]

There is no way to set the linuxParameters on an ECS task definition. It is present on the underlying CfnTaskDefinition.ContainerDefinitionProperty but is a readonly property on the actual CDK construct, with no way to set it

See the official ECS docs here: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definition_parameters.html#container_definition_linuxparameters

And the corresponding CFN docs here: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-taskdefinition-linuxparameters.html

[nathanpeck]

I found a workaround for now if anyone else encounters this:

    // Define the worker application.
    this.workerDefinition = new ecs.Ec2TaskDefinition(this, 'worker-definition', {
      cpu: '2048',
      memoryMiB: '4096'
    });

    this.container = this.workerDefinition.addContainer('worker', {
      image: ecs.ContainerImage.fromAsset(this, 'worker-image', {
        directory: './worker'
      }),
      memoryLimitMiB: 4096,
      privileged: true,
      cpu: 2048
    });

    this.container.linuxParameters = new ecs.LinuxParameters();

    // Headless chrome requires more shared memory for rendering large pages
    this.container.linuxParameters.sharedMemorySize = 2048;

    // Headless chrome uses sandboxing which requires system admin capability
    this.container.linuxParameters.addCapabilities('SYS_ADMIN');

Although the constructor doesn't accept linuxParameters, if you are using JavaScript instead of TypeScript you can ignore the readonly status of the property and just overwrite the properties into the task defition that you need.