openSocial dashboard doesn't work when changing ecm contextPath

When changing context path (thanks to the property org.nuxeo.ecm.contextPath), dashboard doesn't load gadgets...
Error : "No Data received from server :404".

It seems the problem come from nuxeo-opensocial-server/src/main/resources/opensocial/containers/opensocial-container.js which contains hardcoded references to default context path /nuxeo.