Specifying a Specific Port for AWS Lightsail Container

I created an AWS container and pushed my container image to AWS. When deploying my image, I selected it from the "modify and deploy" section under the container settings. Then, in the port settings, I specified the port I wanted it to listen on, for example, 6299. My goal was to make it only accept requests coming from the port I specified, but despite all the configurations, it only accepts requests from port 80.