I was using a pi 4 to run docker and wanted to shutdown a windows PC from within the dock. Unfortunately the container doesn't have samba common installed so I can't use net rpc shutdown from within container.

My end goal is to set up a system daemon that will listen for an ip address being written to the named pipe and use whatever comes into that pipe to execute the command
I was going to hard code in username and password, I know not the best security and if anyone knows a way to store that information more securely I'm all ears, but I'm trying to focus on one issue at a time :lol:

For the system daemon I was thinking about creating it like this:
But I'm stuck at the magic happens here bit. I was able to do this with wakeonlan since you can use -f to specify a file that has the mac address to send a magic packet to, but I'm missing that last crucial step to make it work with net rpc shutdown. Does anyone have any ideas?
It doesn't have to be a system daemon in the end, but I know I only want to pass in the ip address so if somehow my named pipe was hijacked anyone trying to send a command would have it fail as it immediately tries to execute the net rpc shutdown command

Read an environment file in the unit?
https://stackoverflow.com/a/66167271

So I tried to modify my service file based on that suggestion to:
But now it hangs my entire server waiting for an input from the named pipe instead of running quietly in the background