Equivqlent of docker run --expose {port} in docker-py

Hi

I’ve been trying to expose ports with this library as you would with docker create --expose 80 but have been unable to. I can’t seem to find anything in the documentation on how to do this. Any help would be appreciated.

OS: Ubuntu 18.04

~$ pip3 freeze | grep docker && python3 --version && docker version
docker==3.6.0
docker-pycreds==0.4.0
Python 3.6.7
Client:
 Version:           18.09.0
 API version:       1.39
 Go version:        go1.10.4
 Git commit:        4d60db4
 Built:             Wed Nov  7 00:49:01 2018
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.0
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.4
  Git commit:       4d60db4
  Built:            Wed Nov  7 00:16:44 2018
  OS/Arch:          linux/amd64
  Experimental:     false

[to-bee]

Try this:

import docker
from docker.models.containers import Container
client = docker.from_env()
container: Container = client.containers.run(
    ...
    ports={5432: []},
    ...
)

[Resisty]

Hello,

I think there’s a subtlety being missed. If I use docker-py to start a container with

import docker

c = docker.from_env()
ctnr_id = c.api.create_container('image', 'command', ports={8080: None}

I can see with docker inspect that it comes across as

            "Ports": {
                "8080/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "32801"
                    }
                ]
            },

However, if I run the container directly with --expose 8080, docker inspect shows

"Ports": {
                "1935/tcp": [
                    {
                        "HostIp": "0.0.0.0",
                        "HostPort": "1935"
                    }
                ],
                "8080/tcp": null
            },

Additionally, I’m unable to hit the container’s ip address on port 8080 with docker-py’s setup, but I am able to hit it with the container that used --expose 8080.

I could be missing some critical piece of docker know-how, here, so any help/advice is greatly appreciated. Thanks!