Add accept-bind-to-port Docker label

### 🚀 The feature, motivation and pitch

Add `com.amazonaws.sagemaker.capabilities.accept-bind-to-port` Docker label to support multi-container and inference pipelines when deploying to SageMaker endpoints.

Reference:
https://docs.aws.amazon.com/sagemaker/latest/dg/multi-container-troubleshooting.html

### Use case description

_No response_

### Alternatives

_No response_

### Additional context

_No response_

No file or test is named. Start by locating the Docker image build definitions and any existing label declarations, then verify the resulting image includes the requested SageMaker capability label and supports the documented multi-container deployment use case.

Written by the indexing model from the issue text.