Update .gitlab-ci.yml file

.gitlab-ci.yml

+stages:
+    - static
+
+default:
+  tags:
+    - podman
+
+static-copy:
+    stage: static
+    image: harbor.wolke.img.univie.ac.at/podman/alpine-sshpass:latest
+    when: manual
+    script:
+        - sshpass -p "$WOLKE_PASSWORD" rsync -autv --delete -e "ssh -o StrictHostKeyChecking=no" ./Documentation/html/* "$WOLKE_USER@wolke.img.univie.ac.at:/var/www/flexpart/flexextract"