docs/engine/reference/commandline/container_port.md

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---
datafolder: engine-cli
datafile: docker_container_port
title: docker container port
---
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{% include cli.md %}
## Examples
```bash
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
b650456536c7 busybox:latest top 54 minutes ago Up 54 minutes 0.0.0.0:1234->9876/tcp, 0.0.0.0:4321->7890/tcp test
```
### Find out all the ports mapped
```bash
$ docker container port test
7890/tcp -> 0.0.0.0:4321
9876/tcp -> 0.0.0.0:1234
```
### Find out a specific mapping
```bash
$ docker container port test 7890/tcp
0.0.0.0:4321
```
```bash
$ docker container port test 7890
0.0.0.0:4321
```
### An example showing error for non-existent mapping
```bash
$ docker container port test 7890/udp
2014/06/24 11:53:36 Error: No public port '7890/udp' published for test
```