Docker permission issue when meshing

[lorax42]

I tried running a simple potential flow sim using the docker option. Writing the mesh case works fine but running the mesher fails with:

21:44:00  Executing: ./Allmesh in /home/$USER/CfdOF/Unnamed/meshCase
22:13:18  Using command: docker exec 0d0e3d4ea3cc bash -c source /etc/bashrc && cd "/tmp/Unnamed/meshCase" && ./Allmesh
22:13:18  bash: line 1: ./Allmesh: Permission denied

I'm running

NixOS 26.05
FreeCAD 1.1.1
CfdOF 1.37.3
Docker 29.5.2

[muezabdalla]

spawn a new mint VM to test this and could not replicate it.
did you add yourself to the docker group? (sudo usermod -aG docker $USER)

[lorax42]

Yes, my user is in the docker group.

[lorax42]

Maybe if I understand the pipeline, I can figure it out. What is assumed to be on my system?

[muezabdalla]

the first line in the Allmesh script is the shebang #!/bin/bash maybe your docker image does not have bash installed?
did you installed the docker image using the preferences page?

[lorax42]

Yes I did

[muezabdalla]

did you logout and re-login (or reboot) after adding yourself to the docker group?
can you run the docker container manually outside CfdOF or even make a new container?

[muezabdalla]

Maybe if I understand the pipeline, I can figure it out. What is assumed to be on my system?

it requires docker or podman but to be honest depending on the package used it can give some errors.
on debian I installed the package docker-compose but did not work but with docker.io package it works.

I was able to successfully use podman on void linux once. but after installing docker I was not able to make a simulation again.

[lorax42]

did you logout and re-login (or reboot) after adding yourself to the docker group? can you run the docker container manually outside CfdOF or even make a new container?

Yes I did and I am able to run docker containers.

[lorax42]

Maybe if I understand the pipeline, I can figure it out. What is assumed to be on my system?

it requires docker or podman but to be honest depending on the package used it can give some errors. on debian I installed the package docker-compose but did not work but with docker.io package it works.

I was able to successfully use podman on void linux once. but after installing docker I was not able to make a simulation again.

I only have docker installed. If you want, I can show you the nixconfig, but that probably won't help.

[muezabdalla]

I only have docker installed. If you want, I can show you the nixconfig, but that probably won't help.

I was trying to replicate the issue in a nixos VM but was not able to install freecad nor docker.
if your nixconfig include freecad that could be helpful. because I could not even use the appimage in nixos.
I tried nix-env -i freecad to install it but that also did not work

[oliveroxtoby]

@mmcker do you perhaps have any idea?

[lorax42]

These are the relevant parts of my configuration.nix:

# configuration.nix
...
    users.users."USER" = {
        isNormalUser = true;
        description = "USER";
        extraGroups = [ "networkmanager" "wheel" ] ++ [ "docker" ];
        packages = with pkgs; [
            ...
            python3
            freecad
        ];
    };
...
    virtualisation.docker = {
        enable = true;
        rootless = {
            enable = true;
            setSocketVariable = true;
        };
    };
...