Rocker throws DependencyMissing error on Ubuntu 24.04.

[nvbln]

I am creating this issue as I cannot find a new issue by @SevenFo, as suggested in issue #280.

I was following along the following guide to run a container: https://github.com/osrf/vrx/wiki/docker_install_tutorial.
As part of this guide, rocker is installed as follows (see also "Step 1" in the previous guide): https://github.com/HonuRobotics/dockwater/wiki/Install-Dependencies.

During the guide, I hit the following error as soon as I run ./run.bash dockwater:humble:

              [--version] [--cuda] [--dev-helpers] [--devices [DEVICES ...]]
              [--env NAME[=VALUE] [NAME[=VALUE] ...]] [--env-file ENV_FILE]
              [--expose EXPOSE] [--git] [--git-config-path GIT_CONFIG_PATH]
              [--group-add GROUP_ADD] [--home] [--hostname HOSTNAME]
              [--name NAME]
              image [command ...]
rocker: error: DependencyMissing encountered: Docker Client failed to connect to docker daemon. Please verify that docker is installed and running. As well as that you have permission to access the docker daemon. This is usually by being a member of the docker group. The underlying error was:
"""
Error while fetching server API version: HTTPConnection.request() got an unexpected keyword argument 'chunked'
"""

However, simply running rocker without any arguments is enough to trigger this error.
I have attempted to use Docker in rootless mode, but this didn't make a difference.

I am using Ubuntu 24.04, upgraded from 22.04.

[tfoote]

It looks like a similar incompatibilty between docker-py and requests as #278 . I found docker/docker-py#3113

Can you verify your versions of python3-docker and python3-requests in your environment? It appears to have been fixed: docker/docker-py#3116 but I don't know which release it's into.

[nvbln]

Ubuntu 24.04 LTS has:
python3-requests: 2.31.0
python3-docker: 5.0.3-1

So you're correct that this is caused due to a version incompatibility, this is not an issue anymore from python3-docker>=6.1.0 onwards.
For future reference, since python3-docker is only available as 5.0.3-1 for noble. Instead I manually installed version 7.1.0-1 from oracular as the dependencies stay the same. In order for things to work I also had to reverse the rootless mode. After that everything ran as expected. Thanks!

[tfoote]

Ohh, that sounds like an issue we'll want to push on upstream with Ubuntu. Thanks for confirming that's your issue and providing a suggested workaround.

python3-docker package version in noble: https://packages.ubuntu.com/noble/python3-docker

[nvbln]

It appears a fix is fortunately already on the way: https://bugs.launchpad.net/ubuntu/+source/python-docker/+bug/2065348.