docker containers connected to a network when run won't show up in network_object.containers field

when running a container with

client.containers.run(.....,
                                 network=net1,
                                 ......)

the container ends up connected to the network, but when calling net1.containers on the network object, it returns an empty list ([]) When re-getting the network object with client.networks.get(net1_name), the container shows up.

to reproduce this bug:

1. create a network object with client.networks.create
2. run a container with client.containers.run, with parameter network = (the name of the net you created)
3. check network_object.containers field and see it’s empty
4. do client.networks.get(net1_name) to re-get the object and see that now the container is present in checked this issue with two different hosts with different docker versions, both reproduced the bug.

[shin-]

The list endpoint returns a shortened representation of the Network object, omitting the list of connected containers among other things. You can also use the greedy parameter to load the full data, eg

[n.containers for n in client.networks.list(greedy=True)]

[shin-]

how come this bug is not even looked at?

Maintainers have lives too. But also, it helps to include as much information as possible when reporting an issue.

In this particular case, this is not a bug; you simply need to call reload() on the network object to see the updated list of containers.