mc-backup now stops server and outputs tar.ztd to stdout

this is motivated by wanting to redirect the world/server files
after provisioning, according to user config.

.hushlogin was added to root's home dir as to not interfere with
directly piping ssh's mc-backup output to a file

automate.sh

@@ -23,7 +23,7 @@ fi
 
 echo "preparing..." # making sure things have the right owners
 adduser --disabled-password --gecos "" mc
-mkdir -p /srv/minecraft/{server,backups}
+mkdir -p /srv/minecraft/server
 cat <<- 'EOF' > /etc/systemd/system/mc-server.service
 	[Unit]
 	Description=Minecraft server
@@ -46,7 +46,8 @@ echo "PATH=/root/.local/bin/:$PATH" >> /root/.bashrc #FIXME: needs to me made im
 
 cat <<- 'EOF' > /root/.local/bin/mc-backup
 	#!/usr/bin/env bash
-	tar -caf /srv/minecraft/backups/server.tar.xz /srv/minecraft/server/
+	systemctl stop mc-server
+	tar -c -f - /srv/minecraft/server/ | zstd
 EOF
 
 chown root:root /root/.local/bin/mc-backup