- Because scrollbar uses [remote file from CDN](https://github.com/MaazAli/Meteor-Malihu-Custom-Scrollbar/blob/master/jquery.mCustomScrollbar.js#L50),

fork package to https://github.com/wekan/wekan-scrollbar and include
  non-minified file locally to Wekan, so that using scrollbar works without direct connection
  to Internet. Wekan should not load any external files by default, as was case before
  new scrollbar, and is again now after this fix.

Closes #2056

snapcraft.yaml

@@ -152,6 +152,11 @@ parts:
               git clone --depth 1 -b master https://github.com/wekan/wekan-ldap.git
               cd ..
             fi
+            if [ ! -d "packages/wekan-scrollbar" ]; then
+              cd packages
+              git clone --depth 1 -b master https://github.com/wekan/wekan-scrollbar.git
+              cd ..
+            fi
             rm -rf package-lock.json .build
             meteor add standard-minifier-js --allow-superuser
             meteor npm install --allow-superuser