ECS doesn't set port mapping

Question

Hi, I'm trying to use EC2 to launch a Docker container
On EC2, things work fine with 
```
docker run -d -p 8080:8080 --name=apiserver 
```
On ECS, I specified a port mapping in my task definition: 
![Enter image description here](/media/postImages/original/IM_wMLZ5sQRuW4kcvehwpHBA)

And when I SSH the ECS host I see my Docker running, but no port mapping is set
![Enter image description here](/media/postImages/original/IM0EhQnf7iQrOArUbA-PbBrg)

Why ECS isn't setting my port mapping??

Answer

Check your network mode as depending on it you may need to go modifications to the configuration: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definition_parameters.html#network_mode

ECS doesn't set port mapping

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