[UPDATED] OpenVPN Server for LibreELEC

Is there any way make n open vpn server pn x86_64 LibreElec; Is this only for arm devices that server is this thread?

From an LE/OpenVPN perspective there's no difference between x86_64 and arm/aarch64 images.

WARNING: The requested image's platform (linux/arm) does not match the detected host platform (linux/amd64/v1) and no specific platform was requested
exec /usr/local/bin/ovpn_initpki: exec format error

WARNING: The requested image's platform (linux/arm) does not match the detected host platform (linux/amd64/v1) and no specific platform was requested
exec /usr/local/bin/easyrsa: exec format error

WARNING: The requested image's platform (linux/arm) does not match the detected host platform (linux/amd64/v1) and no specific platform was requested
exec /usr/local/bin/ovpn_getclient: exec format error

why am i getting these then?

The original post/user created an 'arm' docker image, so that's not going to run on x86_64 hardware. There are probably hundreds of alternative Docker images (for x86_64) available if you look on Docker Hub .. not that you need to use Docker because we already embed the OpenVPN binary in the OS and the only difference between client and server use is configuration. Create a server config and start it at boot and we have a server. Create a client config and start it at boot and we're a client. Create both client and server configs if you like .. all is possible.

Is there a tutorial how to? I didn't find anything else other than that here with steps what to do

Nope, but the basic instructions in /storage/.config/system.d/openvpn.service.sample are valid for creating a client connection. If you want to create a server, read up on how to create an OpenVPN server conf and use the same service/conf to start a server. The only challenge with LE will be that any external files you link into conf will need to be located somewhere under /storage and not the usual /etc/openvpn location used in any guides you read.