fix: CI: write multi-line ssh key

Makefile

@@ -13,7 +13,7 @@ ci-deploy: ## Deploy from CI/CD. Only call from within CI
 	git config --global user.email "${CI_COMMIT_AUTHOR_EMAIL}"
 	git config --global user.name "${CI_COMMIT_AUTHOR}"
 	./scripts/zola.sh deploy pages public "${CI_COMMIT_AUTHOR} <${CI_COMMIT_AUTHOR_EMAIL}>"
-	./scripts/ci.sh --init ${HOSTEA_WRITE_DEPLOY_KEY}
+	./scripts/ci.sh --init "$$HOSTEA_WRITE_DEPLOY_KEY"
 	./scripts/ci.sh --deploy ${PAGES_DEPLOY_SECRET}  pages
 	./scripts/ci.sh --clean
 

scripts/ci.sh

@@ -46,7 +46,8 @@ EOF
 
 # $1: SSH private key
 write_ssh(){
-	echo $1 > $SSH_ID_FILE
+	echo > $SSH_ID_FILE
+	echo "$1" >> $SSH_ID_FILE
 }
 
 set_ssh_remote() {
@@ -98,7 +99,7 @@ then
 		exit -1
 	fi
 	set_ssh_remote
-	write_ssh $2
+	write_ssh "$2"
 elif match_arg $1 '-c' '--clean'
 then
 	clean