No, cpu wise there should not really be an overhead, as it just uses docker or podman to run the application in question. the only bottleneck i see could be host filesystems that are not supported by docker/podman and therefore could lead to slow file access in the container.
What are other products in this kind of space? Something where you could get some stats from the host and docker and have the ability to control containers through a web interface (like pulling new containers, restarting, changing env variables)?