Rootless Podman mechanism with setUID downscoping
Gitlab: v18.9.1-ee
Jacamar CI: 0.27.4
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When using SetUID downscoping and the Podman mechanism I am hitting issues with:
```
Preparing the "custom" executor
00:13
Using Custom executor with driver Jacamar CI 0.27.4...
Podman support enabled
Target Image: artifactory/image/ubi9
time="2026-03-13T14:16:12-04:00" level=warning msg="RunRoot is pointing to a path (/run/user/2000000/containers) which is not writable. Most likely podman will fail."
Error: creating events dirs: mkdir /run/user/2000000: permission denied
```
A similar error occurs if I `sudo su` to a user and run podman commands
```
RunRoot is pointing to a path (/run/user/2000000/containers) which is not writable. Most likely podman will fail.
Error: creating events dirs: mkdir /run/user/2000000: permission denied
```
This is a generic fundamental issue rather than an issue with Jacamar best I can tell, but is there a recommended way to use Jacamar and SetUID downscoping with the podman mechanism?
issue