new: ``run-once`` service should not be linked as dependencies to proper ``service``.

This will prevent ``run-once`` service to be ran by ``compose up`` if linked as a
dependency to another service.

bin/compose

@@ -797,6 +797,8 @@ get_docker_compose_links() {
     while read-0 _relation_name target_service _relation_config tech_dep; do
         master_target_service="$(get_top_master_service_for_service "$target_service")" || return 1
         [ "$master_service" == "$master_target_service" ] && continue
+        type="$(get_service_type "$target_service")" || return 1
+        [ "$type" == "run-once" ] && continue
         if [ "$tech_dep" == "reversed" ]; then
             deps+=("$(echo -en "$master_target_service:\n  links:\n    - $master_service")")
         elif [ "$tech_dep" == "True" ]; then