@Sebastian Pokrywka, Thanks for posting in Q&A. Microsoft Tunnel requires Docker or Podman on the Linux server to provide support for containers. According to the Linux server requirements, Podman version 3.0 or 4.0 depending on the version of RHEL is required. However, it is not clear from the context whether rootless Podman is supported for configuring the Microsoft Tunnel Gateway service on RHEL.
https://learn.microsoft.com/en-us/mem/intune/protect/microsoft-tunnel-prerequisites#linux-server
In the following link, it mentions Rootless container fix on January 4 2024. So I think it can support.
https://learn.microsoft.com/en-us/mem/intune/protect/microsoft-tunnel-upgrade#january-4-2024
You can run the Microsoft Tunnel readiness tool to check.
Hope the above information can help.
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