Dockerfile fix for local packages

Dockerfile

@@ -77,6 +77,7 @@ RUN \
     gosu wekan:wekan sh ./install_meteor.sh && \
     \
     # Build app
+    source /home/wekan/app/app.env && \
     cd /home/wekan/app && \
     gosu wekan /home/wekan/.meteor/meteor npm install --save xss && \
     gosu wekan /home/wekan/.meteor/meteor build --directory /home/wekan/app_build && \