Merge branch 'rsync' into 'develop'

add rsync to container

See merge request R3/school/courses!143

.gitlab-ci.yml

@@ -72,6 +72,7 @@ upload:
   stage: deploy
   image: alpine
   before_script:
+    - apk add rsync
     - 'which ssh-agent || ( apk add --update openssh )'
     - eval $(ssh-agent -s)
     - echo "$B64SSHPRIVKEY" | base64 -d | tr -d '\r' | ssh-add - > /dev/null