How to pass extra options do Docker?

[chlohr]

Related Bug

Hi,
Is there some way to pass extra options (or volumes) to Docker?
(I would have been interested in mounting /tmp/.X11-unix/X0 ;-) )

Best regards

Feature Description

Offering some ways for a GUI would be a plus.

Solution

No response

Alternative Solutions

No response

Additional Context

No response

[tcaiazzi]

Dear @chlohr,

Thank you for opening this issue!

Currently, directly passing extra options to Docker is not supported. However, we are actively exploring the possibility of adding support for mounting additional volumes on devices in the upcoming releases.

Could you please share more details about your specific use case?

This will help us understand your requirements better and potentially find a suitable solution using the currently available features.

Thanks!

[chlohr]

Hello,
My goal is to use X11 applications ;-)

The simplest and lightest way to do this is to share the unix socket /tmp/.X11-unix/X0 from the user's session on the host machine towards the containers.
(bind mount of the socket file)

Of course, there are then a few details to adjust ('export DISPLAY=:0' in containers, and 'xhost +SI:localuser:$USER' on the host).
But sharing the unix socket does the job.

This is why I would be interested in ways to pass such extra mounting option to docker.

For now, my workaround is to put this unix socket in the /shared/ folder (with symlink to /tmp/.X11-unix/X0), and having a forwarding process in the host
('socat UNIX-LISTEN:./shared/X0,unlink-early,fork UNIX-CONNECT:/tmp/.X11-unix/X0')

Another alternative is to do X11 via TCP ('export DISPLAY=172.17.0.1:0'), and a forwarder
('socat TCP-LISTEN:6000,fork,bind=172.17.0.1 UNIX-CONNECT:/tmp/.X11-unix/X$0').
But this requires a linked network interface on the nodes, which complicates network configuration on the nodes and disturbs my teaching objectives.

A final alternative is to ssh -X from the host, which requires finding the binded IP addresses of the nodes.

But all these alternatives are complicated. I'd rather just share the X11 unix socket as mentioned at the beginning.

Regards