Add quick SSH setup script

setup.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+set -e
+ssh_key='ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKG63aHe1QmTPj4mWg0F/fAzcB78tBJglxyLI0AzOKvW acp-home'
+eval $(grep '^ID=' /etc/os-release)
+distro=${ID:-unknown}
+case $distro in
+    debian)
+        apt update
+        apt install openssh-server
+        install -d -m 0700 $HOME/.ssh
+        echo $ssh_key > $HOME/.ssh/authorized_keys
+        echo 'PermitRootLogin prohibit-password' > /etc/ssh/sshd_config.d/root.conf
+        systemctl restart ssh.service
+        ;;
+    *)
+        echo "Unknown distro" >&2
+        exit 1
+        ;;
+esac