DNS resolution fails in podman containers

[robert-cronin]

I am encountering an issue with DNS resolution inside podman containers after the step-security/harden-runner step, specifically the containers are unable to resolve certain domain names like security.debian.org. I've put together a minimal repro that can be found here: https://github.com/robert-cronin/podman-in-harden-runner

I ran two workflows with the only difference being the step-security/harden-runner step removed to make sure I wasn't missing something with podman:

1. With harden-runner step: https://github.com/robert-cronin/podman-in-harden-runner/actions/runs/15844352622/job/44662966262
2. Without harden-runner step: https://github.com/robert-cronin/podman-in-harden-runner/actions/runs/15844357377/job/44662983981

I could be missing a step in configuring the runner, so any guidance would also be appreciated. Thank you!

[varunsh-coder]

Thanks for reporting! We are investigating