Docker CLI contexts not used or supported #3146
Description
Testing with Docker Desktop on a mac, I have this docker context state:
➜ docker context list
NAME TYPE DESCRIPTION DOCKER ENDPOINT KUBERNETES ENDPOINT ORCHESTRATOR
colima moby colima unix:///Users/brhiggins/.colima/default/docker.sock
default moby Current DOCKER_HOST based configuration unix:///var/run/docker.sock
desktop-linux * moby unix:///Users/brhiggins/.docker/run/docker.sock
The desktop-linux context is active, and /var/run/docker.sock does not exist. docker version correctly uses the active context and returns the server version info. However, docker.from_env() throws an error:
../../../.pyenv/versions/3.11.4/envs/myproj/lib/python3.11/site-packages/docker/client.py:96: in from_env
return cls(
../../../.pyenv/versions/3.11.4/envs/myproj/lib/python3.11/site-packages/docker/client.py:45: in __init__
self.api = APIClient(*args, **kwargs)
../../../.pyenv/versions/3.11.4/envs/myproj/lib/python3.11/site-packages/docker/api/client.py:197: in __init__
self._version = self._retrieve_server_version()
../../../.pyenv/versions/3.11.4/envs/myproj/lib/python3.11/site-packages/docker/api/client.py:221: in _retrieve_server_version
raise DockerException(
E docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))
If I set DOCKER_HOST=unix:///Users/brhiggins/.docker/run/docker.sock in my shell or in Python before calling docker.from_env(), it succeeds.
I'll concede that the name from_env sort of sounds like it only considers environment variables, but I had read it as creating a client from "the current environment" more broadly, and I had expected it to behave the same as the docker CLI.