command parameter for NetworkLoadBalancedTaskImageOptions

### Describe the feature

Despite the fact that `ApplicationLoadBalancedTaskImageOptions` has `command` property, `NetworkLoadBalancedTaskImageOptions` doesn't.

### Use Case

Docker has multiple apps inside. I need to tell to ECS which one to start.

### Proposed Solution

_No response_

### Other Information

_No response_

### Acknowledgements

- [ ] I may be able to implement this feature request
- [ ] This feature might incur a breaking change

### CDK version used

2.147.3 (build 32f0fdb)

### Environment details (OS name and version, etc.)

MacOS

Compare NetworkLoadBalancedTaskImageOptions with ApplicationLoadBalancedTaskImageOptions, focusing on how the existing command property is represented. Trace the ECS task definition generated for the network load-balanced option and add equivalent command support; done means Docker commands can be configured through that option.

Written by the indexing model from the issue text.