Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -6,7 +6,7 @@ before_script:
   - echo "$SSH_PRIVATE_KEY" | base64 -d | tr -d '\r' | ssh-add - > /dev/null
   - mkdir -p ~/.ssh
   - chmod 700 ~/.ssh
-  - echo "$SSH_KNOWN_HOSTS" > ~/.ssh/known_hosts
+  - ssh-keyscan bwunicluster.scc.kit.edu > ~/.ssh/known_hosts
   - chmod 644 ~/.ssh/known_hosts
 
 Test SSH: