Dockerfile updated

genieacs-base/Dockerfile

@@ -8,6 +8,7 @@ RUN cd /opt; \
     git clone https://github.com/genieacs/genieacs.git; \
     cd genieacs; \
     git checkout $(git tag -l v1.1.* --sort=-v:refname | head -n 1) ; \
-    npm install  --build-from-resource; \
+    npm install libxmljs adriancooney/libxmljs ; \
+    npm install --build-from-resource ; \
     npm run compile; \
     rm -rf /var/lib/apt/lists/*