Fix copy command

.gitlab-ci.yml

@@ -51,4 +51,4 @@ build-zynthbox-image-armhf:
 
     # Compress image with xz and push to pub.zynthbox.io
     - echo "# Pushing compressed image to pub.zynthbox.io"
-    - xz -zv --threads=12 --memory=100% ./workspace/$image_name -c | scp -P 3138 -i "$SSH_KEY_PUB_ZYNTHBOX_IO" -o "StrictHostKeyChecking no" zynthbox@pub.zynthbox.io:ISOs/.ci-testing-isos/ "cat > $image_name.xz"
+    - xz -zv --threads=12 --memory=100% ./workspace/$image_name -c | ssh -p 3138 -i "$SSH_KEY_PUB_ZYNTHBOX_IO" -o "StrictHostKeyChecking no" zynthbox@pub.zynthbox.io "cat > ISOs/.ci-testing-isos/$image_name.xz"