move ssh setup to script

we want to see the output of the deploy steps in the UI
doesn't happen if it's a scipt
not sure this will work

.woodpecker/build-and-deploy.yml

@@ -18,11 +18,7 @@ steps:
     secrets:
       - deploy_ssh_key
     commands:
-      - apk add openssh-client
-      - mkdir -p $HOME/.ssh
-      - ssh-keyscan -t ed25519 turtle.hup.is >> $HOME/.ssh/known_hosts
-      - echo "$DEPLOY_SSH_KEY" > $HOME/.ssh/id_ed25519
-      - chmod 0600 $HOME/.ssh/id_ed25519
+      - ./.woodpecker/ssh.sh
       - ./.woodpecker/deploy.sh
     when:
       # Only try to deploy if previous step is successful

.woodpecker/ssh.sh

@@ -0,0 +1,7 @@
+#!/bin/sh -e
+
+apk add openssh-client
+mkdir -p $HOME/.ssh
+ssh-keyscan -t ed25519 turtle.hup.is >> $HOME/.ssh/known_hosts
+echo "$DEPLOY_SSH_KEY" > $HOME/.ssh/id_ed25519
+chmod 0600 $HOME/.ssh/id_ed25519