Suricata IPS on container Eth0 error

Hello.. from this guide:
https://pve.proxmox.com/pve-docs/chapter-pve-firewall.html#_tips_and_tricks

what ethernet device i need to indicate for my CT 115 that iside use etho? I need to use the vmr0 of the host?
Thank yuo

tail suricata.log
1/7/2023 -- 16:25:19 - <Warning> - [ERRCODE: SC_ERR_NO_RULES_LOADED(43)] - 1 rule files specified, but no rules were loaded!
1/7/2023 -- 16:25:19 - <Info> - Threshold config parsed: 0 rule(s) found
1/7/2023 -- 16:25:19 - <Info> - 0 signatures...

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